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[Alan] This is a world first.
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It's never been done before.
This is a prototype vehicle.
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It's never been operated before.
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00:00:16,417 --> 00:00:17,750
This full-ocean-depth
submersible
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00:00:17,784 --> 00:00:19,718
is the equivalent
of a moon shot.
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00:00:21,187 --> 00:00:23,655
Look at the clarity
of the water.
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What the hell was that?
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[woman] We have
at least four species here.
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[man] Whoa. Whoa.
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Whoa, whoa, whoa.
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We're not getting a seal.
That's not good
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00:00:44,911 --> 00:00:46,912
[Demetri] Humankind has explored
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00:00:46,946 --> 00:00:48,147
every continent on Earth.
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We've climbed
its tallest mountains.
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And even journeyed into space.
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[man] Thank you, Mr President.
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But there's a vast swathe
of our own planet
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that has remained a mystery.
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The deep ocean.
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Stretching down over 35, 000
feet into crushing pressures,
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it's been near impossible
to reach.
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Until now.
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New engineering
breakthroughs are driving
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an audacious global mission
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to dive to the deepest points
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of all of the five oceans
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for the first time in history.
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These pioneers will push
technology to the limit...
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- [man] He's going up.
- [laughs]
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[cheering]
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[Demetri] ...to open up
this final frontier
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as never before.
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[woman] Trying
to mentally put yourself
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at the bottom
is just mind-blowing.
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[Demetri]
Mapping hidden landscapes.
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Discovering unknown life forms.
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[man] What on Earth is that?
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[Demetri]
And unlocking the secrets
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of how life in the extreme
deep ocean
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affects our entire planet.
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[suspenseful music playing]
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[Demetri] The Deep Ocean
expedition team
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are at the very beginning
of a year-long mission.
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[indistinct radio chatter]
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[Demitri] They will head
to each of the five oceans,
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discover their deepest points
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and explore
their uncharted depths.
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Remarkably,
this complex operation
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is being driven
and financed by one man
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with a hugely ambitious dream.
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Ex-naval commander
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and multimillionaire investor
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Victor Vescovo.
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[Victor] The exciting thing
about the expedition
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is the possibility
of opening up the oceans
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and they do constitute
70% of the world.
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[Demetri]
Victor has already completed
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00:02:55,241 --> 00:02:58,477
what is known as
the Explorer's Grand Slam,
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00:02:58,511 --> 00:03:01,013
climbing the tallest peak
on each continent
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00:03:01,047 --> 00:03:03,615
and skiing
to North and South Poles.
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00:03:04,684 --> 00:03:06,518
Now he's bidding to be the first
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to conquer a new frontier.
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[Victor] I was just curious,
I've always wanted
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to do something that
has never been done before
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and then it hit me.
No-one has actually been
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00:03:14,194 --> 00:03:16,195
to the bottom
of the five oceans.
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[Demetri] The team's first ocean
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is one of the most volatile
and unpredictable of all.
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The mighty Atlantic.
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Covering an extraordinary fifth
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of the Earth's surface,
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it generates
some of the most powerful
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natural hazards on the planet.
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From the kind of deadly icebergs
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that sank the Titanic
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to devastating hurricanes.
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And the Atlantic's
unexplored depths
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hold enormous dangers
of their own.
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00:03:49,796 --> 00:03:52,297
On average,
the Atlantic stretches down
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00:03:52,332 --> 00:03:55,200
around 11,000 feet.
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But the team are now arriving
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just off the island
of Puerto Rico,
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where a mysterious trench
is thought to plunge
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to a staggering 27,500 feet.
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00:04:05,378 --> 00:04:09,147
Enough to hold
22 Empire State Buildings
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stacked on top of each other.
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00:04:11,818 --> 00:04:15,854
The pressure at such great
depths is immense.
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00:04:15,888 --> 00:04:18,423
The equivalent for a human
body to be crushed
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00:04:18,458 --> 00:04:21,393
beneath 2,500 pick-up trucks.
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00:04:22,795 --> 00:04:26,932
For Victor to get there
will be a massive challenge.
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Any ordinary submarine
would simply implode.
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So Victor has commissioned
a radical new design.
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00:04:34,040 --> 00:04:36,708
A prototype sub
that today is being launched
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00:04:36,743 --> 00:04:40,212
on a crucial test dive
to prove its readiness
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for an assault
on the Trench itself.
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This is the most advanced
deep-sea submersible
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in history. At this point.
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[Demetri] The sub's builder
is Patrick Lahey,
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whose team have spent the last
three and a half years
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00:04:54,260 --> 00:04:58,196
designing and constructing
this engineering wonder.
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00:04:58,231 --> 00:04:59,731
[Patrick] This
full-ocean-depth submersible
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is the equivalent of a moon shot
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00:05:01,701 --> 00:05:03,368
and it has been
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00:05:03,403 --> 00:05:06,571
the most difficult
undertaking of my life.
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[Demetri] To combat
the enormous pressures
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at the bottom of the ocean,
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the sub has at its core
a perfect sphere,
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made of lightweight titanium.
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Any imperfection
and it would be crushed
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like a tin can.
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00:05:23,890 --> 00:05:25,223
Construction of the sphere
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had to be incredibly precise.
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Each half was forged
separately in the US.
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Machined to add
super-wide-angle viewports
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and an access hatch,
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then shipped
to a test facility in Russia
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that once certified
Cold War subs,
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home to the only pressure
chamber in the world
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big enough.
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Finally,
the sphere was assembled
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inside a streamlined casing.
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But the expedition
isn't just about
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getting one man
to the bottom of the sea.
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00:06:01,361 --> 00:06:03,095
The team are also hoping
to solve
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00:06:03,129 --> 00:06:06,998
some of the great mysteries
of life in the deep ocean.
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On the surface,
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the Atlantic is one of the most
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00:06:09,569 --> 00:06:12,704
varied habitats on Earth.
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00:06:12,739 --> 00:06:14,573
[Camrin] The marine life
of the Atlantic
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is pretty remarkable.
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From top predators,
like the great white shark,
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all the way to all the kinds
of tropical reef fishes,
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big or small,
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00:06:23,750 --> 00:06:26,985
that many of us have seen
underwater with our own eyes.
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[Demetri] But what lurks
beneath remains
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a far more tantalising mystery.
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It's easier to explore space
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than it is to explore
our own deep ocean.
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It's very hard for us
to communicate
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through the water to vehicles.
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You also have the pressure.
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15,000lb per square inch.
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Animals have figured out
a way to overcome
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and adapt to that pressure,
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but we have yet to do that
with our vehicle systems.
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[Demetri] Could this new sub
be the answer?
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Being fitted to the exterior
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are a set of highly
specialised cameras,
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designed to bring back
the first ever footage
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from the deepest point
in the Atlantic Ocean.
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00:07:03,389 --> 00:07:05,257
These are rated
to 11,000 metres.
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00:07:05,291 --> 00:07:07,626
If it implodes,
it's like a small explosion
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00:07:07,660 --> 00:07:10,195
and it can start
a chain reaction.
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So, we want to make sure that
these housings are solid.
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You don't want any water
inside them.
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You don't want them
to implode, either.
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That's a lot of pressure
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we're gonna be taking them to.
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[Demetri] The expedition's
revolutionary technology
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is about to be put to the test.
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Today's target is on a shelf
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perched precariously above
the deep Trench itself.
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[man] The dive site today
is quite shallow.
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Just to get the sub
in the water,
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and make sure
it's behaving itself.
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[man] It's deploying.
That's good. Up on the main.
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[man]
The mission is to make sure
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that the sub is truly ready,
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because, tomorrow, Victor
will be extremely deep
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and on his own
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and there's no room for error.
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[man] Here we go, guys. Whoo!
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[Victor] Let's hope we have
a nice, uneventful ride.
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[Kelvin]
Okay. Get that hatch open.
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- [Victor] I'm on. Got it.
- [Kelvin] All right, Victor.
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- Have a good one, man.
- [Victor] I'm in!
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00:08:07,587 --> 00:08:09,254
- [man] Hatch?
- Hatch.
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[man] Up! Up fast. Up fast!
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LF, LF, this is Surface.
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- You are clear to dive.
- Clear. Enabling thrusters.
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Okay, if you've got
the starboard camera,
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I've got the port.
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Roger.
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- Confirm the hatch is sealed.
- [Patrick] Yeah.
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Just a dribble right there.
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I'm gonna hang on to it
as we head for the interface
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just to make sure.
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Ohh!
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Got a little water coming in
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00:09:05,244 --> 00:09:06,211
at the forward end of the hatch.
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You shouldn't have to
do that [bleep].
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- I'm not getting a seal.
- That's not good.
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[Victor] [bleep]
This is getting really bad.
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00:09:23,763 --> 00:09:25,030
I can't get a seal.
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00:09:25,064 --> 00:09:26,698
I'm trying to shut it off. Okay?
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00:09:30,670 --> 00:09:32,137
Surface, this is LF.
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00:09:32,171 --> 00:09:34,105
Be advised
we have a leaking hatch.
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- What did he say?
- [man] The hatch.
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00:09:35,875 --> 00:09:37,909
- Did you hear what he said?
- [man] He's got a leak.
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[Demetri] Before taking on
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the deepest point
in the Atlantic,
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the expedition team have
launched their prototype sub
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on a crucial test dive.
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00:09:56,429 --> 00:09:59,631
This is LF. We have a leaking
hatch. We are aborting.
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00:09:59,665 --> 00:10:02,067
We are aborting.
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00:10:02,101 --> 00:10:04,869
I'm gonna go ahead
and drop the weights.
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00:10:04,904 --> 00:10:06,671
LF, Xeno copies.
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00:10:06,706 --> 00:10:07,806
"Releasing starboard weight."
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00:10:10,776 --> 00:10:12,110
The weight is off.
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00:10:15,214 --> 00:10:17,315
[Patrick] Surface, this is LF.
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00:10:17,350 --> 00:10:19,184
Requesting pick-up.
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00:10:19,218 --> 00:10:21,486
The only thing we could do
under the circumstances
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00:10:21,520 --> 00:10:23,355
- was abort.
- [Victor] Yeah, I agree.
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00:10:23,389 --> 00:10:25,256
We're not going down
with water coming in so fast
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00:10:25,291 --> 00:10:27,292
we can't control it.
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00:10:28,527 --> 00:10:29,628
[Kelvin] So,
they've aborted the dive.
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00:10:29,662 --> 00:10:31,496
We'll bring it back on
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00:10:31,530 --> 00:10:34,065
and try and figure out
what's going on there.
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00:10:36,502 --> 00:10:39,070
[Paul] That's the only danger
in a sub is a leak.
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00:10:39,105 --> 00:10:41,806
You know? In deep water,
221
00:10:41,841 --> 00:10:44,309
uh, you don't have the time
to think about that,
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00:10:44,343 --> 00:10:46,177
you are dead already!
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00:10:46,212 --> 00:10:47,379
[Demetri] Back on the surface,
224
00:10:47,413 --> 00:10:49,347
and the team
face a new challenge.
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00:10:49,382 --> 00:10:50,782
The waves have picked up,
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00:10:50,816 --> 00:10:53,752
putting the recovery process
under intense pressure.
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00:10:53,786 --> 00:10:56,021
[Kelvin] Okay, let's get that
one tagline on.
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00:10:56,055 --> 00:10:58,623
[man] We are missing
a tagline off one side.
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00:11:01,961 --> 00:11:03,395
[man] You want to do it
or not do it?
230
00:11:03,429 --> 00:11:05,196
[Victor] Let's do it.
See if we can.
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00:11:05,231 --> 00:11:07,732
[man] Come forward.
Come forward.
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00:11:07,767 --> 00:11:09,200
Come ahead. Come ahead.
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00:11:17,276 --> 00:11:18,977
- Whoa!
- Whoa.
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00:11:21,681 --> 00:11:23,148
[man] Victor. Here, Victor.
235
00:11:31,957 --> 00:11:33,958
[man] You never want to be
in between anything,
236
00:11:33,993 --> 00:11:35,326
when you're on the surface
of the vessel,
237
00:11:35,361 --> 00:11:37,896
even a small boat
and a submersible,
238
00:11:37,930 --> 00:11:40,532
because you can get hit
pretty hard.
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00:11:40,566 --> 00:11:42,801
[Demetri] The Atlantic Ocean
has given the team
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00:11:42,835 --> 00:11:44,769
some harsh lessons.
241
00:11:44,804 --> 00:11:46,071
[Victor] A really
disappointing dive.
242
00:11:46,105 --> 00:11:47,706
We were getting water
ingress from the hatch,
243
00:11:47,740 --> 00:11:50,108
which we shouldn't have had
244
00:11:50,142 --> 00:11:51,776
and it was just too much.
245
00:11:51,811 --> 00:11:53,445
But, if this was easy,
246
00:11:53,479 --> 00:11:55,547
somebody else would have
done it long before.
247
00:11:55,581 --> 00:11:57,282
We're gonna run out
of daylight today.
248
00:12:02,421 --> 00:12:04,055
[man] Let's get her
in the hangar.
249
00:12:04,090 --> 00:12:05,557
[Kelvin] The hatch is an issue.
250
00:12:05,591 --> 00:12:07,258
Got to figure out
how to do that.
251
00:12:09,161 --> 00:12:11,129
[Demetri] With the sub crew
under huge pressure
252
00:12:11,163 --> 00:12:13,765
to make precision repairs
to the hatch,
253
00:12:13,833 --> 00:12:16,301
the sonar scanning team
are beginning their search
254
00:12:16,335 --> 00:12:19,137
for the deepest point
in the Atlantic Ocean.
255
00:12:19,171 --> 00:12:21,372
The expedition ship
is newly fitted out
256
00:12:21,407 --> 00:12:23,842
with a cutting-edge,
echo-sounding system
257
00:12:23,876 --> 00:12:26,377
that's one of the most
powerful in the world.
258
00:12:26,412 --> 00:12:28,179
This is a brand-new system
for the vessel
259
00:12:28,214 --> 00:12:29,147
and it is the first time
260
00:12:29,181 --> 00:12:30,715
that this system
has been installed
261
00:12:30,750 --> 00:12:32,917
anywhere in the world
on any vessel.
262
00:12:32,952 --> 00:12:35,120
[Demetri] By bouncing
an 11-mile-wide beam
263
00:12:35,154 --> 00:12:38,423
of sound waves off the ocean
floor, the team are building
264
00:12:38,457 --> 00:12:40,692
a remarkably detailed 3D map
265
00:12:40,726 --> 00:12:43,161
of this vast underwater canyon.
266
00:12:45,765 --> 00:12:48,366
The team are also on
the look-out for hidden risks
267
00:12:48,400 --> 00:12:51,569
in what is, in fact,
a geological danger zone.
268
00:12:51,604 --> 00:12:55,306
The Puerto Rico Trench
is an active seismic zone.
269
00:12:55,341 --> 00:12:57,041
There are a number
of earthquakes
270
00:12:57,076 --> 00:12:59,511
that have their epicentres
in this region.
271
00:13:00,780 --> 00:13:02,480
[Demetri] The Trench
is a collision zone
272
00:13:02,515 --> 00:13:05,984
between two of the Earth's
giant tectonic plates.
273
00:13:06,018 --> 00:13:08,620
One grinds down
beneath the other,
274
00:13:08,654 --> 00:13:13,191
heading into the boiling
magma of the Earth's core.
275
00:13:13,225 --> 00:13:14,793
The plates' downward fold
276
00:13:14,827 --> 00:13:18,263
is what forms the deep
Puerto Rico Trench.
277
00:13:18,297 --> 00:13:19,631
[Christa] That interaction
of the plates
278
00:13:19,665 --> 00:13:21,666
generates lots of earthquakes.
279
00:13:21,700 --> 00:13:23,735
Some days, you can get 40, 50.
280
00:13:23,769 --> 00:13:26,271
And you never know when a large
281
00:13:26,305 --> 00:13:28,006
or a very large earthquake
could occur.
282
00:13:29,508 --> 00:13:31,576
[Demetri] Scientists predict
that a massive earthquake
283
00:13:31,610 --> 00:13:34,779
here in the future will
trigger a deadly tsunami,
284
00:13:34,814 --> 00:13:38,216
with enough force to strike
the east coast of America.
285
00:13:39,552 --> 00:13:41,886
The expedition is hoping
to gain new insights
286
00:13:41,921 --> 00:13:44,222
into this volatile danger zone
287
00:13:44,256 --> 00:13:46,558
by bringing back rock
and sediment samples
288
00:13:46,592 --> 00:13:50,094
from the very bottom
of the Trench.
289
00:13:50,129 --> 00:13:53,331
But all now depends
on fixing the leaking hatch
290
00:13:53,365 --> 00:13:56,034
and the sub team are
working through the night
291
00:13:56,068 --> 00:13:58,036
to find a way to repair it.
292
00:13:58,070 --> 00:14:01,372
I just machined a quarter of
a millimetre off the bottom.
293
00:14:01,407 --> 00:14:04,275
All right, I'll jump
in there and put 'em in.
294
00:14:04,310 --> 00:14:06,344
I'm gonna go ahead.
Want me to close your hatch?
295
00:14:06,378 --> 00:14:08,780
- [Kelvin] I'll get it.
- Okay.
296
00:14:08,814 --> 00:14:10,715
[man] All right. Here we go.
297
00:14:16,555 --> 00:14:19,023
It's just coming up
to your hatch vent now.
298
00:14:25,030 --> 00:14:27,332
Just lapping over
your hatch vent now.
299
00:14:27,366 --> 00:14:28,633
[laughs]
300
00:14:28,667 --> 00:14:31,870
It's all good, man.
I got nothing in here so far.
301
00:14:31,904 --> 00:14:34,939
How about that? A quarter
of a millimetre did it.
302
00:14:34,974 --> 00:14:36,774
[Demetri]
The sub crew are all set
303
00:14:36,809 --> 00:14:37,575
for a second attempt
304
00:14:37,610 --> 00:14:39,544
at a sign-off test dive.
305
00:14:42,314 --> 00:14:46,684
It's 6am and the expedition
ship is alive with activity.
306
00:14:46,719 --> 00:14:48,720
As well as making the sub dives,
307
00:14:48,754 --> 00:14:51,489
a key part of the mission
is to search for life
308
00:14:51,523 --> 00:14:54,692
in the unexplored reaches
of the Trench.
309
00:14:54,727 --> 00:14:56,361
Much is known of the wildlife
310
00:14:56,395 --> 00:14:59,964
visible near the surface
of the Atlantic.
311
00:14:59,999 --> 00:15:04,135
Like these curious visitors,
a pod of pilot whales.
312
00:15:06,405 --> 00:15:08,940
They spend most of their time
in a narrow band
313
00:15:08,974 --> 00:15:11,042
at the very top
of the water column
314
00:15:11,076 --> 00:15:13,211
called the Sunlight Zone,
315
00:15:13,245 --> 00:15:16,614
where enough light filters
down for plants to grow,
316
00:15:16,649 --> 00:15:19,717
which, in turn,
sustain a rich food chain.
317
00:15:22,321 --> 00:15:25,757
But what creatures live far
below, in the dark depths?
318
00:15:26,992 --> 00:15:28,860
How do they deal
with the pitch black?
319
00:15:28,894 --> 00:15:33,331
And the crushing pressures?
And what do they feed on?
320
00:15:33,365 --> 00:15:35,833
In search of answers,
the marine biologists
321
00:15:35,868 --> 00:15:38,236
are deploying robotic
underwater probes
322
00:15:38,270 --> 00:15:41,739
known as "landers", which
will sink to the sea floor.
323
00:15:41,774 --> 00:15:44,642
[Alan] These are the traps.
Two on the inside.
324
00:15:44,677 --> 00:15:47,111
[Demetri] Baited traps will
try and catch samples
325
00:15:47,146 --> 00:15:49,247
of anything living
at the bottom.
326
00:15:49,281 --> 00:15:51,082
There are two cameras
on the lander.
327
00:15:51,150 --> 00:15:52,483
One facing this side.
328
00:15:52,518 --> 00:15:54,385
There is one on the other side,
329
00:15:54,420 --> 00:15:56,487
focused at a package
of mackerel bait,
330
00:15:56,522 --> 00:15:58,623
for looking at scavenging fish
331
00:15:58,657 --> 00:16:00,825
and the big mobile animals.
332
00:16:00,859 --> 00:16:03,194
[Thomas] It's incredibly
exciting to get to areas
333
00:16:03,228 --> 00:16:05,530
we wouldn't normally get
the chance to, to get some
334
00:16:05,564 --> 00:16:07,098
high-quality footage
of the animals
335
00:16:07,132 --> 00:16:09,400
we have a feeling
are down there.
336
00:16:09,435 --> 00:16:11,369
[Demetri] The sub team
are also making
337
00:16:11,403 --> 00:16:13,204
their final pre-dive checks,
338
00:16:13,238 --> 00:16:15,606
testing out a component
Victor will use
339
00:16:15,641 --> 00:16:18,676
to bring back further
vital samples from the deep.
340
00:16:18,711 --> 00:16:21,646
A $300,000 manipulator arm.
341
00:16:21,680 --> 00:16:25,984
We have the hand controller
for the manipulator arm.
342
00:16:26,018 --> 00:16:27,251
You're clear
to come straight up.
343
00:16:30,990 --> 00:16:32,557
The slave arm duplicates.
344
00:16:34,193 --> 00:16:36,194
It looks good.
I think it'll be fine.
345
00:16:38,230 --> 00:16:39,998
[Demetri] At last,
the team are ready
346
00:16:40,032 --> 00:16:42,333
to relaunch their prototype sub.
347
00:16:44,169 --> 00:16:46,137
Heading once more
for the flat shelf
348
00:16:46,171 --> 00:16:48,339
over 3,000 feet down,
349
00:16:48,374 --> 00:16:50,675
on the edge of the deep Trench.
350
00:16:51,910 --> 00:16:54,479
First, they launch
the robotic probes.
351
00:16:58,917 --> 00:17:00,184
Then the sub.
352
00:17:00,219 --> 00:17:03,588
[Kelvin] Right, LF.
You're clear to dive.
353
00:17:04,890 --> 00:17:06,891
Clear to dive.
Starting to pump in.
354
00:17:06,925 --> 00:17:08,092
[Kelvin] Good luck.
355
00:17:10,129 --> 00:17:11,162
[Victor]
Everything is looking good.
356
00:17:11,196 --> 00:17:13,197
Didn't have a drop of water
come in.
357
00:17:18,303 --> 00:17:21,072
[Demetri] Beyond 600 feet
and the sub enters
358
00:17:21,106 --> 00:17:23,608
the pitch black
of the Twilight Zone,
359
00:17:23,642 --> 00:17:25,676
where sunlight barely penetrates
360
00:17:25,711 --> 00:17:28,279
and temperatures plunge.
361
00:17:28,313 --> 00:17:31,249
[Simon] What is amazing
is that so many animals
362
00:17:31,283 --> 00:17:33,251
have found a way
of not just making a living,
363
00:17:33,285 --> 00:17:34,919
but are thriving.
364
00:17:34,953 --> 00:17:37,055
[Demetri]
Like the vicious fangtooth.
365
00:17:37,089 --> 00:17:40,358
It's outsized teeth act
like the bars of a cage
366
00:17:40,392 --> 00:17:42,794
to trap any prey it bumps into.
367
00:17:45,497 --> 00:17:47,999
Incredibly, some create
their own light,
368
00:17:48,033 --> 00:17:51,402
in a miraculous process
called bioluminescence.
369
00:17:51,437 --> 00:17:53,071
[Simon] There is
communication going on
370
00:17:53,105 --> 00:17:54,372
using light.
371
00:17:54,406 --> 00:17:57,809
Anglerfish produce light
to attract prey.
372
00:17:57,843 --> 00:18:01,579
It's really remarkable
the exquisite adaptations
373
00:18:01,613 --> 00:18:05,316
that bioluminescence allows
for organisms in the deep.
374
00:18:09,688 --> 00:18:12,890
[Demetri] Now, over 3,000
feet below the surface,
375
00:18:12,925 --> 00:18:14,859
the shelf on the edge
of the Trench
376
00:18:14,893 --> 00:18:16,861
comes into view.
377
00:18:16,895 --> 00:18:19,530
You're approaching
the bottom. See it?
378
00:18:20,866 --> 00:18:22,600
I think I see it.
379
00:18:22,634 --> 00:18:25,470
[Demetri] Will they encounter
new species of the deep,
380
00:18:25,504 --> 00:18:27,672
here, in the mysterious
Twilight Zone?
381
00:18:27,706 --> 00:18:31,008
Wow! Look at these glowing
things, whatever they are.
382
00:18:31,043 --> 00:18:32,910
- Wow.
- It's almost like a light.
383
00:18:42,087 --> 00:18:45,323
[Demetri] On a crucial test
dive into the Twilight Zone,
384
00:18:45,357 --> 00:18:48,893
Victor and Patrick now have
the seabed in sight.
385
00:18:51,096 --> 00:18:53,364
[Victor]
Surface, this is the LF.
386
00:18:53,398 --> 00:18:57,902
Present depth, 1-0-3-1 metres.
387
00:18:57,936 --> 00:19:00,738
At bottom. Repeat. At bottom.
388
00:19:02,074 --> 00:19:05,776
[Demetri] The sub now goes
into exploration mode.
389
00:19:05,811 --> 00:19:08,546
Victor has released
a series of small weights
390
00:19:08,580 --> 00:19:11,716
to leave the sub
neutrally buoyant.
391
00:19:11,750 --> 00:19:14,886
Now he can use two banks
of propellers or thrusters
392
00:19:14,920 --> 00:19:16,854
to move in any direction.
393
00:19:22,261 --> 00:19:23,861
But look at the clarity
of the water.
394
00:19:23,896 --> 00:19:26,030
Look at the visibility.
395
00:19:26,064 --> 00:19:28,266
It's remarkable.
396
00:19:28,300 --> 00:19:29,700
[Demetri] Swimming into view
397
00:19:29,768 --> 00:19:32,336
comes a strange
jelly-like creature,
398
00:19:32,371 --> 00:19:35,039
nicknamed the headless
chicken monster.
399
00:19:35,073 --> 00:19:37,642
Look at these glowing things
whatever they are.
400
00:19:39,745 --> 00:19:41,078
[Victor] Bioluminescent.
401
00:19:42,915 --> 00:19:44,482
[Demetri]
A few hundred feet away,
402
00:19:44,516 --> 00:19:48,886
the robotic probes have
also reached the shelf floor.
403
00:19:48,921 --> 00:19:50,354
It's time to see
404
00:19:50,389 --> 00:19:52,156
whether their baited cameras
will lure in
405
00:19:52,191 --> 00:19:55,459
any other creatures of
the Atlantic Twilight Zone.
406
00:20:00,098 --> 00:20:01,666
The first to arrive
407
00:20:01,700 --> 00:20:04,368
are specialist seabed
scavengers.
408
00:20:06,305 --> 00:20:07,738
Hagfish.
409
00:20:09,208 --> 00:20:10,541
[Thomas] They're quite
gruesome. They will actually burrow
410
00:20:10,576 --> 00:20:11,909
right into the carcass.
411
00:20:11,944 --> 00:20:13,311
The difficulty in doing that
is of course,
412
00:20:13,345 --> 00:20:15,046
you're getting deeper
and deeper into the flesh,
413
00:20:15,080 --> 00:20:16,747
you're having trouble breathing.
414
00:20:16,782 --> 00:20:19,784
But they can breathe through
their anus to overcome that.
415
00:20:19,818 --> 00:20:21,986
[Demetri] When a passing
deep-sea gulper shark
416
00:20:22,020 --> 00:20:24,388
decides to have a hagfish
for dinner,
417
00:20:24,423 --> 00:20:26,991
it's in for a nasty surprise.
418
00:20:29,895 --> 00:20:32,630
[Alan] Oh, he went for it! Nice.
419
00:20:32,664 --> 00:20:34,999
There you go, slime.
Right there.
420
00:20:35,033 --> 00:20:38,402
That's a hagfish
defence response.
421
00:20:38,437 --> 00:20:40,304
If a shark bites the hagfish,
422
00:20:40,339 --> 00:20:41,539
it automatically excretes
423
00:20:41,573 --> 00:20:43,274
all this slime into its mouth.
424
00:20:43,308 --> 00:20:44,875
That slime is full
of microfibres,
425
00:20:44,910 --> 00:20:47,378
so, essentially,
it chokes the shark.
426
00:20:47,412 --> 00:20:48,713
[Demetri] Remarkably,
427
00:20:48,747 --> 00:20:51,382
hagfish also cover their
food in a web of slime
428
00:20:51,416 --> 00:20:53,784
to keep other scavengers away.
429
00:20:59,891 --> 00:21:01,459
[Victor] I really want
to try and get to a lander
430
00:21:01,493 --> 00:21:02,693
and use the manipulator.
431
00:21:04,696 --> 00:21:06,297
[Demetri] Up in Mission Control,
432
00:21:06,331 --> 00:21:08,165
the team are using
powerful modems
433
00:21:08,233 --> 00:21:10,668
to track the sub
and guide them around.
434
00:21:10,702 --> 00:21:15,206
Let's move north. True north.
And we'll go 100 metres.
435
00:21:15,240 --> 00:21:17,275
[Victor] 100 metres due north.
436
00:21:17,309 --> 00:21:20,444
Wow. To me,
it's almost like a light.
437
00:21:20,479 --> 00:21:22,480
Wait, is that the lander?
438
00:21:24,549 --> 00:21:25,950
Slow down.
Yeah, that's the lander.
439
00:21:27,686 --> 00:21:29,620
[Patrick] Oh, yeah, you can
see all kinds of critters.
440
00:21:29,655 --> 00:21:32,590
That's awesome! Look,
there's a gorgonian there.
441
00:21:33,959 --> 00:21:35,760
[Victor] There's a big fish.
I'm not sure what it is.
442
00:21:35,794 --> 00:21:37,428
It is a type of shark,
443
00:21:37,462 --> 00:21:39,964
but not one that you would
see in shallow water.
444
00:21:41,633 --> 00:21:44,068
[Patrick] Do you want to try
and use the manipulator?
445
00:21:44,102 --> 00:21:46,537
[Victor] Oh, yeah,
we can definitely do that.
446
00:21:46,571 --> 00:21:48,072
[Demetri]
It's a chance for Victor
447
00:21:48,106 --> 00:21:49,840
to practise picking up samples.
448
00:21:49,875 --> 00:21:52,443
A key task for when
he makes his deep dive
449
00:21:52,477 --> 00:21:53,844
into the Trench.
450
00:21:53,879 --> 00:21:55,780
There's your arm.
Look, there's your camera.
451
00:21:57,115 --> 00:21:58,015
[Patrick] Whoa-ho.
452
00:21:59,518 --> 00:22:00,851
Now line it up.
453
00:22:10,729 --> 00:22:11,696
What the hell was that?
454
00:22:11,730 --> 00:22:14,165
We just lost
the manipulator arm.
455
00:22:14,199 --> 00:22:15,466
[Patrick] Oh, my [bleep].
456
00:22:17,936 --> 00:22:19,303
There goes 300 grand.
457
00:22:20,739 --> 00:22:22,640
[Patrick] Oh, my [bleep].
458
00:22:22,674 --> 00:22:24,608
[Demetri] The arm's
auto-release mechanism
459
00:22:24,643 --> 00:22:25,843
has triggered an error.
460
00:22:25,911 --> 00:22:27,845
Ditching it on the seabed.
461
00:22:27,879 --> 00:22:30,281
Without its weight,
the sub is now making
462
00:22:30,315 --> 00:22:32,216
a rapid and unplanned ascent.
463
00:22:32,250 --> 00:22:35,086
[Patrick] Surface,
the manipulator just parted.
464
00:22:35,120 --> 00:22:37,021
We're on our way up.
465
00:22:37,055 --> 00:22:38,923
Roger that. Left bottom.
466
00:22:39,925 --> 00:22:42,093
With no arm. Thank you.
467
00:22:42,127 --> 00:22:44,462
Well, I don't know where
we go from here, Patrick.
468
00:22:45,897 --> 00:22:48,599
We're very early on
in the programme
469
00:22:48,633 --> 00:22:49,700
and, when you start having
470
00:22:49,735 --> 00:22:51,369
these secondary
systems having issues,
471
00:22:51,403 --> 00:22:53,371
you start having some concern
472
00:22:53,405 --> 00:22:55,172
about the core systems.
473
00:22:55,207 --> 00:22:57,408
Things like life support,
flotation,
474
00:22:57,442 --> 00:22:58,909
the integrity of the sphere.
475
00:22:58,944 --> 00:23:00,544
You started wondering,
if, you know,
476
00:23:00,579 --> 00:23:02,213
if we really test these things
477
00:23:02,247 --> 00:23:03,948
at 8,000 metres,
478
00:23:03,982 --> 00:23:04,949
are they gonna have a problem
479
00:23:04,983 --> 00:23:05,983
or even a failure?
480
00:23:09,454 --> 00:23:12,323
[Demetri] The sub may be
safely back on the surface,
481
00:23:12,357 --> 00:23:14,458
but another huge threat
is looming.
482
00:23:16,495 --> 00:23:20,698
During the dive, the waves
have grown much larger.
483
00:23:20,732 --> 00:23:23,067
Getting the $35 million sub
484
00:23:23,101 --> 00:23:24,835
hooked on to the ship's crane
485
00:23:24,870 --> 00:23:27,872
is now full of dangers.
486
00:23:27,906 --> 00:23:30,040
[Kelvin] Just hang on.
Hang on, buddy!
487
00:23:30,075 --> 00:23:31,075
[bleep]
488
00:23:34,713 --> 00:23:37,148
[man] There you go,
there you go! Fantastic!
489
00:23:37,182 --> 00:23:38,315
Up on the main!
490
00:23:39,951 --> 00:23:41,385
[man] Down on this tag.
491
00:23:41,420 --> 00:23:43,654
[man] Whoa.
492
00:23:43,722 --> 00:23:45,756
Whoa.
493
00:23:45,791 --> 00:23:46,957
Whoa, whoa, whoa.
494
00:23:48,627 --> 00:23:49,794
[bleep]
495
00:23:51,797 --> 00:23:54,298
[Demetri] A powerful wave
has slammed the sub
496
00:23:54,332 --> 00:23:55,633
into the back of the ship
497
00:23:55,667 --> 00:23:57,268
and destroyed an entire bank
498
00:23:57,302 --> 00:24:00,538
of the all-important propellers.
499
00:24:02,574 --> 00:24:04,775
The mounting problems
are causing Victor
500
00:24:04,810 --> 00:24:08,579
to have doubts
about the entire mission.
501
00:24:08,613 --> 00:24:10,514
[Victor]
I'm seriously considering
502
00:24:10,549 --> 00:24:12,783
aborting this mission
in Puerto Rico.
503
00:24:12,818 --> 00:24:14,051
It is something
I don't want to do,
504
00:24:14,085 --> 00:24:16,420
but it's something
we may have to do.
505
00:24:16,488 --> 00:24:19,457
- [man] Look at the thrusters.
- [man] What happened there?
506
00:24:19,491 --> 00:24:20,658
[Kelvin] Smashed into the back.
507
00:24:20,692 --> 00:24:22,059
We got a tail wind.
508
00:24:22,093 --> 00:24:24,862
Just skied straight down
into the back of the boat.
509
00:24:30,969 --> 00:24:33,003
Absolutely heartbreaking.
510
00:24:33,038 --> 00:24:35,206
Could be game over
for this particular trip.
511
00:24:46,284 --> 00:24:48,552
[Demetri] The sub crew
need to find a way
512
00:24:48,587 --> 00:24:50,988
to repair their damaged
prototype
513
00:24:51,022 --> 00:24:53,524
and convince Victor
that it's safe to pilot it
514
00:24:53,558 --> 00:24:55,926
to the bottom of the Atlantic
515
00:24:55,961 --> 00:24:57,461
or the expedition is over.
516
00:24:59,264 --> 00:25:00,831
Meanwhile, the science team
517
00:25:00,866 --> 00:25:02,299
are retrieving
their robotic probes,
518
00:25:02,334 --> 00:25:05,236
released remotely
from the seabed
519
00:25:05,270 --> 00:25:08,138
and the traps have caught
a wonder of the deep ocean.
520
00:25:08,173 --> 00:25:10,407
A monstrous relative
of the woodlouse.
521
00:25:10,442 --> 00:25:12,409
The giant isopod.
522
00:25:12,444 --> 00:25:14,612
[Alan] The woodlouse
in your house,
523
00:25:14,646 --> 00:25:16,380
you can find
at high altitude as well.
524
00:25:16,414 --> 00:25:18,482
They are actually the same
as the giant ones
525
00:25:18,517 --> 00:25:20,751
in the Gulf of Mexico
or the Caribbean.
526
00:25:20,785 --> 00:25:22,786
So, in terms of a successful
colonisation of the planet,
527
00:25:22,821 --> 00:25:24,889
isopods are pretty impressive.
528
00:25:24,923 --> 00:25:26,557
[Demetri] While
the scientists continue
529
00:25:26,591 --> 00:25:28,325
to process their finds,
530
00:25:28,360 --> 00:25:31,795
the sonar team have some
vital news of their own.
531
00:25:31,830 --> 00:25:34,198
They've identified
the precise location
532
00:25:34,232 --> 00:25:37,635
of the very deepest point
in the Atlantic Ocean.
533
00:25:37,669 --> 00:25:40,304
- 8, 400?
- 8, 400, yeah.
534
00:25:40,338 --> 00:25:42,473
It's a real proper target.
535
00:25:42,507 --> 00:25:43,707
It's there.
536
00:25:43,742 --> 00:25:45,009
- You get one shot.
- Yeah.
537
00:25:45,043 --> 00:25:47,845
This could be tough.
538
00:25:47,879 --> 00:25:49,013
[Demetri] The site lies
539
00:25:49,047 --> 00:25:50,981
at the western end
of the Trench.
540
00:25:51,016 --> 00:25:52,950
An area no-one has identified
541
00:25:52,984 --> 00:25:54,752
as the deepest point before
542
00:25:54,786 --> 00:25:59,957
and a location no-one
has ever explored before.
543
00:25:59,991 --> 00:26:01,792
But is the sub ready for this
544
00:26:01,826 --> 00:26:04,361
incredibly dangerous mission?
545
00:26:04,396 --> 00:26:05,996
[man]
I'm willing to try anything.
546
00:26:06,031 --> 00:26:07,831
[Demetri] First,
the team need to repair
547
00:26:07,866 --> 00:26:09,366
the damaged propellers.
548
00:26:09,401 --> 00:26:10,367
Keep it up there.
549
00:26:10,402 --> 00:26:11,669
Keep the [bleep] thing up there.
550
00:26:11,703 --> 00:26:13,270
[man] Over there.
551
00:26:13,305 --> 00:26:16,173
All right, Hector,
stay and watch that thruster.
552
00:26:16,207 --> 00:26:18,208
You're clear
to enable thrusters.
553
00:26:19,444 --> 00:26:21,011
[Victor]
Thrusters are now enabled.
554
00:26:21,046 --> 00:26:23,213
Beginning thruster test. Ready?
555
00:26:23,248 --> 00:26:24,214
[Kelvin] Roger that. Go ahead.
556
00:26:26,151 --> 00:26:29,053
[man] Yeah, looks good. Whoo!
557
00:26:29,087 --> 00:26:31,255
[Demetri]
But can Victor trust the sub
558
00:26:31,289 --> 00:26:33,557
with his life on the deep dive?
559
00:26:33,592 --> 00:26:35,426
[Victor] We're gonna have
to make a reasoned judgment
560
00:26:35,460 --> 00:26:38,529
about whether to accept
some faith in the team,
561
00:26:38,563 --> 00:26:40,297
that they have
solved the major issues.
562
00:26:40,332 --> 00:26:41,765
Just have to make
the decision tonight
563
00:26:41,833 --> 00:26:44,535
and then inform the team
about what we're gonna do.
564
00:26:53,845 --> 00:26:56,413
[Victor] So, from my own
perspective, I feel that
565
00:26:56,481 --> 00:26:58,816
the vessel is safe enough
to try and take it down
566
00:26:58,850 --> 00:27:00,951
8, 000 metres and come back up.
567
00:27:00,986 --> 00:27:03,187
If, at any point,
I feel like it's unsafe,
568
00:27:03,221 --> 00:27:04,989
I'm gonna drop
all the weights I can
569
00:27:05,023 --> 00:27:06,557
and I'm gonna come back up.
570
00:27:06,591 --> 00:27:07,625
It's a calculated risk,
571
00:27:07,659 --> 00:27:09,560
but it's like anything
else in life.
572
00:27:09,594 --> 00:27:10,594
So we'll give it a shot.
573
00:27:15,734 --> 00:27:18,836
[Demetri] The countdown has
begun to the first ever dive
574
00:27:18,870 --> 00:27:21,505
to the very deepest point
of the Atlantic.
575
00:27:21,539 --> 00:27:25,042
Even though Victor has never
piloted the sub solo before,
576
00:27:25,076 --> 00:27:27,077
he will make the dive alone.
577
00:27:28,313 --> 00:27:30,247
- Let's do this.
- Ready to launch.
578
00:27:30,281 --> 00:27:31,849
Bridge, copy, boats are a go.
579
00:27:31,883 --> 00:27:33,150
Fingers crossed.
580
00:27:36,287 --> 00:27:37,688
[Victor] I am most concerned
581
00:27:37,722 --> 00:27:38,856
about approaching the bottom.
582
00:27:38,890 --> 00:27:42,026
If there is some flaw
in the vehicle,
583
00:27:42,060 --> 00:27:43,360
it would happen then,
584
00:27:43,395 --> 00:27:46,130
when the pressures
will be the most intense.
585
00:27:46,164 --> 00:27:47,965
[man] Excited. Scared.
586
00:27:47,999 --> 00:27:49,266
Anticipation. All those things.
587
00:27:49,300 --> 00:27:51,402
Godspeed, Victor Vescovo!
588
00:27:55,407 --> 00:27:56,807
[Patrick]
You're all happy and secure.
589
00:27:56,841 --> 00:27:58,342
Life support is running.
590
00:27:58,376 --> 00:28:00,511
You're clear to dive.
591
00:28:00,545 --> 00:28:03,047
Thank you.
See on the other side.
592
00:28:03,081 --> 00:28:05,416
We're ready to launch.
Here we go.
593
00:28:07,485 --> 00:28:09,620
Clear to dive.
Starting to pump in.
594
00:28:13,525 --> 00:28:15,893
I think my heart rate
just went up a little bit.
595
00:28:18,329 --> 00:28:21,031
Seven metres. Eight metres.
Nine metres.
596
00:28:21,066 --> 00:28:24,468
We are descending.
We are diving.
597
00:28:26,137 --> 00:28:27,404
[Demetri]
Soon, Victor is passing
598
00:28:27,439 --> 00:28:29,073
through the Twilight Zone,
599
00:28:29,107 --> 00:28:32,209
into a mysterious area so
completely beyond
600
00:28:32,243 --> 00:28:33,811
any hint of sunlight
601
00:28:33,845 --> 00:28:36,947
that it's known
as the Midnight Zone.
602
00:28:36,981 --> 00:28:38,782
There are gelatinous animals
there. There are fish.
603
00:28:38,817 --> 00:28:42,720
There are things we don't
understand yet or know about.
604
00:28:42,754 --> 00:28:44,488
[Demetri] One of the team's
robotic landers
605
00:28:44,522 --> 00:28:45,956
has been deployed into the heart
606
00:28:45,990 --> 00:28:47,524
of the Midnight Zone,
607
00:28:47,559 --> 00:28:50,828
halfway down the slopes
of the deep Trench.
608
00:28:50,862 --> 00:28:53,197
Just seconds
after hitting the bottom,
609
00:28:53,231 --> 00:28:56,500
a mysterious visitor emerges
from the gloom.
610
00:29:00,405 --> 00:29:03,841
Only rarely sighted,
an arrowtooth eel,
611
00:29:03,875 --> 00:29:06,777
which can grow
up to four feet long.
612
00:29:13,284 --> 00:29:17,087
And, lured from the shadows,
an ancient creature
613
00:29:17,122 --> 00:29:19,423
with huge paddle-like fins,
which thrived
614
00:29:19,457 --> 00:29:20,824
in shallower waters
615
00:29:20,859 --> 00:29:23,127
at the time of the dinosaurs.
616
00:29:23,161 --> 00:29:24,962
The chimera.
617
00:29:35,006 --> 00:29:36,640
We've just crossed 5,000 metres.
618
00:29:36,674 --> 00:29:37,941
Pretty exciting.
619
00:29:37,976 --> 00:29:42,212
Roger. LF,
I have you loud and clear.
620
00:29:42,247 --> 00:29:43,747
[Demetri]
Victor is nearing a hugely
621
00:29:43,782 --> 00:29:44,948
significant boundary.
622
00:29:44,983 --> 00:29:46,383
23,000 feet.
623
00:29:46,417 --> 00:29:49,586
The deepest any other
manned submersible can go.
624
00:29:49,621 --> 00:29:51,555
If something serious goes wrong,
625
00:29:51,589 --> 00:29:54,057
there's now no hope of rescue.
626
00:29:54,092 --> 00:29:55,626
After about 6,000 metres,
627
00:29:55,660 --> 00:29:58,695
we're pretty much on our own.
628
00:29:58,730 --> 00:30:00,130
[Demetri]
This is also the boundary
629
00:30:00,165 --> 00:30:01,732
between the Abyssal Zone
630
00:30:01,766 --> 00:30:03,700
and the deepest zone of all,
631
00:30:03,735 --> 00:30:05,369
the Hadal Zone.
632
00:30:05,403 --> 00:30:07,504
Named after Hades, the ancient
633
00:30:07,539 --> 00:30:09,540
Greek god of the Underworld.
634
00:30:11,409 --> 00:30:13,911
The sub is now enduring
crushing pressures
635
00:30:13,945 --> 00:30:18,048
equivalent to the weight
of 250 Statues of Liberty.
636
00:30:18,082 --> 00:30:21,084
[beeping]
637
00:30:24,656 --> 00:30:26,957
Something is tripping over here.
638
00:30:26,991 --> 00:30:28,859
What the hell is that?
639
00:30:28,893 --> 00:30:30,961
[beeping continues]
640
00:30:30,995 --> 00:30:35,666
LF, LF, confirm, did you
receive my transmission?
641
00:30:35,700 --> 00:30:38,702
[heavy static]
642
00:30:42,307 --> 00:30:44,842
I need my headset.
643
00:30:44,876 --> 00:30:47,578
There's too much noise.
What is that [bleep] noise?
644
00:30:49,113 --> 00:30:51,315
[man] Try response.
645
00:30:51,349 --> 00:30:52,950
Response. Response.
646
00:30:52,984 --> 00:30:54,284
I need you to come to all stop.
647
00:30:54,319 --> 00:30:57,054
[muffled voice under static]
648
00:31:10,134 --> 00:31:11,668
[Demetri]
The team and Mission Control
649
00:31:11,703 --> 00:31:12,936
haven't heard from Victor
650
00:31:12,971 --> 00:31:16,473
for 15 minutes,
since he passed 23,000 feet.
651
00:31:16,507 --> 00:31:19,276
The maximum range
for any rescue operation.
652
00:31:19,310 --> 00:31:20,410
[Patrick]
There's too much noise.
653
00:31:20,445 --> 00:31:23,146
[heavy static]
654
00:31:23,181 --> 00:31:25,415
What is that [bleep] noise
right there?
655
00:31:26,951 --> 00:31:30,053
Victor, can you read me?
656
00:31:30,088 --> 00:31:33,090
[static]
657
00:31:35,627 --> 00:31:37,895
Oh, [bleep].
658
00:31:37,929 --> 00:31:40,130
Okay, I'm going to go
to the headset.
659
00:31:44,435 --> 00:31:47,037
Victor, can you read me?
660
00:31:50,308 --> 00:31:52,509
Can you read me?
661
00:32:16,034 --> 00:32:18,368
[Victor] "Roger."
662
00:32:18,403 --> 00:32:21,204
Have you good.
663
00:32:21,239 --> 00:32:23,373
"I will talk louder."
664
00:32:26,344 --> 00:32:27,778
[bleep]
665
00:32:27,812 --> 00:32:30,380
[laughter]
666
00:32:30,415 --> 00:32:31,114
Breathe.
667
00:32:31,149 --> 00:32:33,583
Breathe, breathe.
668
00:32:38,056 --> 00:32:41,325
200 metres to the bottom.
669
00:32:41,359 --> 00:32:45,228
Roger, LF.
Have you loud and clear.
670
00:32:45,263 --> 00:32:47,431
[Victor] When you're looking
through the viewport,
671
00:32:47,465 --> 00:32:50,000
all you're seeing is black.
672
00:32:50,034 --> 00:32:52,035
Okay, where is it?
Where's the bottom?
673
00:32:52,070 --> 00:32:53,737
Where is it?
674
00:32:53,771 --> 00:32:55,539
I'm getting excited.
675
00:32:58,242 --> 00:32:59,643
And then it comes into view.
676
00:32:59,677 --> 00:33:01,945
Oh, my goodness,
I can see the bottom!
677
00:33:04,382 --> 00:33:05,916
Wow.
678
00:33:10,154 --> 00:33:11,822
There's the bottom.
679
00:33:25,169 --> 00:33:28,405
Wow! I'm at the bottom.
680
00:33:28,439 --> 00:33:30,340
Surface. Surface.
681
00:33:30,375 --> 00:33:33,176
LF, present depth...
682
00:33:33,211 --> 00:33:36,780
8-5-8-9.
683
00:33:36,814 --> 00:33:38,782
"At bottom."
684
00:33:38,816 --> 00:33:40,784
On bottom. Loud and clear.
685
00:33:40,818 --> 00:33:43,353
- Yeah!
- [cheering]
686
00:33:44,856 --> 00:33:46,089
How about that, man?
687
00:33:46,124 --> 00:33:48,759
That's... [bleep] ...great. Huh?
688
00:33:48,793 --> 00:33:51,595
You... [bleep] ...beauties, huh?
689
00:33:55,700 --> 00:33:58,068
[Demetri] Victor has become
the first person
690
00:33:58,102 --> 00:34:00,837
to reach the deepest point
in the Atlantic,
691
00:34:00,872 --> 00:34:03,940
over five miles
below the surface.
692
00:34:11,849 --> 00:34:14,084
The cameras are capturing
a landscape
693
00:34:14,118 --> 00:34:17,721
no-one has ever set eyes on
before.
694
00:34:17,755 --> 00:34:19,689
[Victor]
I'm a long way from home.
695
00:34:19,724 --> 00:34:22,692
It's like I'm on another planet.
696
00:34:22,727 --> 00:34:25,128
The water is barely moving
the sediment.
697
00:34:25,163 --> 00:34:27,197
There's no current here.
698
00:34:33,871 --> 00:34:37,841
My hands are getting cold.
17 degrees down here.
699
00:34:37,875 --> 00:34:38,975
[Demetri]
The floor of the Trench
700
00:34:39,010 --> 00:34:41,078
is thick with fine particles,
701
00:34:41,112 --> 00:34:42,879
sent into billowing clouds
702
00:34:42,914 --> 00:34:44,815
at a touch of the propellers.
703
00:34:44,849 --> 00:34:47,117
[Victor]
Oh, it's all dark now. So...
704
00:34:47,151 --> 00:34:49,319
So much sentiment
I can't see outside.
705
00:34:49,353 --> 00:34:51,621
It's black.
706
00:34:51,656 --> 00:34:53,824
[Demetri]
It looks lifeless and yet,
707
00:34:53,858 --> 00:34:56,126
bowled along by the sub's blast,
708
00:34:56,160 --> 00:34:57,961
are creatures that can survive
709
00:34:57,995 --> 00:35:02,032
at this extreme frontier
of our planet.
710
00:35:02,066 --> 00:35:04,000
Transparent,
jelly-like organisms
711
00:35:04,035 --> 00:35:05,836
called holothurians,
712
00:35:05,870 --> 00:35:07,404
which feed off tiny particles
713
00:35:07,438 --> 00:35:10,607
of food they find
in the sentiment.
714
00:35:10,641 --> 00:35:13,310
There's also a set
of mysterious tracks
715
00:35:13,344 --> 00:35:15,112
crossing the seabed.
716
00:35:22,954 --> 00:35:26,223
But there are more creatures
lurking in the shadows.
717
00:35:27,525 --> 00:35:30,160
The baited landers
dropped to the seabed
718
00:35:30,194 --> 00:35:33,130
are beginning to lure them
into the light.
719
00:35:35,266 --> 00:35:39,136
These shrimp-like organisms,
are called amphipods.
720
00:35:39,170 --> 00:35:41,037
High-pressure specialists
721
00:35:41,072 --> 00:35:43,640
and voracious scavengers.
722
00:35:43,674 --> 00:35:44,941
In the pitch dark,
723
00:35:44,976 --> 00:35:47,444
they have a supercharged
sense of smell
724
00:35:47,478 --> 00:35:51,014
that can detect food
up to half a mile away.
725
00:35:51,048 --> 00:35:54,518
In just minutes,
it's a feeding frenzy.
726
00:36:02,426 --> 00:36:06,429
Meanwhile, Victor is making
a more sobering discovery.
727
00:36:06,464 --> 00:36:08,832
Oh, wow. Looks like
something is dead ahead.
728
00:36:10,801 --> 00:36:13,470
[Demetri] A rusted oil drum.
729
00:36:13,504 --> 00:36:15,939
Although no-one
has ever been here before,
730
00:36:15,973 --> 00:36:18,508
human garbage has still
found its way
731
00:36:18,543 --> 00:36:20,944
to the bottom of the Atlantic.
732
00:36:24,649 --> 00:36:27,417
[Victor] I totally feel like
I'm in a spaceship.
733
00:36:27,451 --> 00:36:29,886
This is wild.
734
00:36:29,921 --> 00:36:33,156
[Demetri] Victor has now been
at the bottom for 45 minutes
735
00:36:33,191 --> 00:36:34,524
and, in Mission Control,
736
00:36:34,559 --> 00:36:37,694
there's growing concern
for his safety.
737
00:36:37,728 --> 00:36:40,230
We have to stop.
For safety reasons.
738
00:36:40,264 --> 00:36:43,266
I don't want him colliding
with a [bleep] lander
739
00:36:43,301 --> 00:36:44,868
on his way up.
740
00:36:44,902 --> 00:36:46,670
[Demetri] The landers
are due to auto-release
741
00:36:46,704 --> 00:36:48,471
in just a few minutes.
742
00:36:48,506 --> 00:36:50,307
If Victor doesn't leave first,
743
00:36:50,341 --> 00:36:52,086
there could be
a damaging collision
744
00:36:52,110 --> 00:36:54,578
that would disable
key features of the sub.
745
00:36:54,612 --> 00:36:57,147
[Victor]
There's something dead ahead.
746
00:36:57,181 --> 00:37:01,351
Be advised.
Lander will be lifting off.
747
00:37:01,385 --> 00:37:04,087
Say again. Keep simple.
748
00:37:04,121 --> 00:37:06,489
Leave bottom. Leave bottom.
749
00:37:15,833 --> 00:37:18,235
[Patrick] Do you copy, LF?
750
00:37:18,269 --> 00:37:22,906
We want you to end the dive
before the lander lift-off.
751
00:37:25,042 --> 00:37:27,544
He's pretty close.
752
00:37:27,578 --> 00:37:31,047
[muffled voice under static]
753
00:37:31,082 --> 00:37:32,515
[Victor] Say again.
754
00:37:32,550 --> 00:37:33,717
When he starts talking
for more than
755
00:37:33,751 --> 00:37:36,319
four or five words on the radar,
756
00:37:36,354 --> 00:37:37,988
especially if it's not clear
words,
757
00:37:38,022 --> 00:37:40,991
I don't understand it
and I don't know what to do.
758
00:37:41,025 --> 00:37:42,626
[Demetri]
If Victor doesn't leave
759
00:37:42,660 --> 00:37:45,095
before the robotic probes
auto-release,
760
00:37:45,129 --> 00:37:48,598
there could be a highly
damaging collision.
761
00:37:48,633 --> 00:37:50,433
[Victor] "Surface, say again."
762
00:37:50,468 --> 00:37:54,070
[Patrick] We recommend you
leave bottom.
763
00:37:54,105 --> 00:37:56,339
Leave bottom. Over.
764
00:38:06,684 --> 00:38:08,718
There's something there.
About one o'clock.
765
00:38:08,753 --> 00:38:11,288
[Patrick] "We recommend
you leave bottom."
766
00:38:11,322 --> 00:38:14,224
Leave bottom. Over."
767
00:38:14,258 --> 00:38:15,225
Understood.
768
00:38:15,259 --> 00:38:18,328
Leaving bottom. Leaving bottom.
769
00:38:19,864 --> 00:38:21,865
I just hope
the weight releases work.
770
00:38:23,668 --> 00:38:26,670
[suspenseful music playing]
771
00:38:29,206 --> 00:38:30,940
Oh, come on.
772
00:38:37,915 --> 00:38:39,316
Come on.
773
00:38:49,160 --> 00:38:50,460
The surfacing weight
was just released.
774
00:38:50,494 --> 00:38:51,861
That's the big moment.
775
00:38:51,896 --> 00:38:52,862
When your heart kind of stops.
776
00:38:52,897 --> 00:38:54,998
I have positive buoyancy.
777
00:38:57,835 --> 00:38:59,102
[Demetri] Just seconds later,
778
00:38:59,136 --> 00:39:01,504
the landers also auto-release.
779
00:39:01,539 --> 00:39:03,940
A collision has been avoided.
780
00:39:03,974 --> 00:39:06,576
Surface, LF.
781
00:39:06,610 --> 00:39:09,479
[Demetri] Positive ascent.
782
00:39:09,513 --> 00:39:12,716
Roger that. Congratulations.
783
00:39:17,955 --> 00:39:20,323
He's gonna be popping up
any second.
784
00:39:33,137 --> 00:39:35,305
Yeah, I see him.
785
00:39:35,339 --> 00:39:37,874
Welcome back to the surface,
Victor.
786
00:39:37,908 --> 00:39:39,042
Thanks, Patrick.
787
00:39:39,076 --> 00:39:41,778
[Patrick] That was one hell
of a dive, sir.
788
00:39:41,812 --> 00:39:43,980
Let's get him on board safe.
789
00:39:49,086 --> 00:39:50,987
Real slow, real slow.
790
00:40:05,302 --> 00:40:07,003
Victor Vescovo!
791
00:40:07,037 --> 00:40:10,039
[cheering and whistling]
792
00:40:11,442 --> 00:40:13,643
[man] Rockstar!
793
00:40:13,677 --> 00:40:15,612
- Thank you. Awesome.
- Good job.
794
00:40:15,646 --> 00:40:17,647
- Good job.
- Well done, everyone!
795
00:40:17,681 --> 00:40:19,849
Great job, team!
796
00:40:19,884 --> 00:40:21,551
One down!
797
00:40:21,585 --> 00:40:23,453
[whistling]
798
00:40:28,959 --> 00:40:31,227
[Patrick] It's a great feeling.
799
00:40:31,262 --> 00:40:33,029
Got one. Seeing the bottom
of the Atlantic,
800
00:40:33,063 --> 00:40:36,099
first person to do that,
that was awesome.
801
00:40:36,133 --> 00:40:37,233
Congratulations.
802
00:40:37,267 --> 00:40:39,202
Thank you, Patrick.
803
00:40:39,236 --> 00:40:41,371
Thanks for training me. [bleep]
804
00:40:41,405 --> 00:40:42,705
Beautiful dive.
805
00:40:42,740 --> 00:40:45,508
Executed, like, to perfection.
806
00:40:45,543 --> 00:40:46,776
[bleep] you,
807
00:40:46,811 --> 00:40:47,877
- I'm so proud of you.
- Thank you.
808
00:40:47,912 --> 00:40:50,013
This is now the deepest diving
809
00:40:50,047 --> 00:40:52,081
operational submersible
in the world.
810
00:40:52,116 --> 00:40:54,250
We just took it where no-one
has ever gone before,
811
00:40:54,285 --> 00:40:56,085
so it's a great feeling.
812
00:40:56,120 --> 00:40:57,187
[Demetri] And, inside the traps
813
00:40:57,221 --> 00:40:58,721
on the robotic probes,
814
00:40:58,756 --> 00:41:00,323
the marine biologists are making
815
00:41:00,357 --> 00:41:02,091
a ground-breaking discovery.
816
00:41:02,126 --> 00:41:05,094
[Christa] We have at least
four new species here.
817
00:41:05,129 --> 00:41:06,729
I've never seen that before.
818
00:41:06,764 --> 00:41:08,498
I don't recognise that, at all.
819
00:41:08,532 --> 00:41:10,333
[Demetri] The discovery caps
what has been
820
00:41:10,367 --> 00:41:11,668
a remarkable first step
821
00:41:11,702 --> 00:41:13,670
in the team's mission to explore
822
00:41:13,704 --> 00:41:16,172
the extreme frontiers
of our planet.
823
00:41:16,207 --> 00:41:17,874
[Victor] We've assembled a team.
824
00:41:17,908 --> 00:41:21,211
Scientific. Sonar.
A ship's crew.
825
00:41:21,245 --> 00:41:23,313
We have created this wonderful
826
00:41:23,347 --> 00:41:27,016
mechanism that can explore
the deepest parts
827
00:41:27,051 --> 00:41:29,619
of the world's oceans,
anywhere, any time.
61250
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