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NARRATOR: The great white.

The shark we're told is the deadliest.

MAN (off-screen): Oh! He's...

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NARRATOR: But what if it wasn't true.

What if there was another shark

that could be even more dangerous.

BROCQ: Guys, the oceanic is here!

NARRATOR: It may be responsible for more attacks

than all other sharks combined.

BROCQ: It's coming down.

NARRATOR: The oceanic whitetip.

And it might be expanding its range.

BROCQ: It's a big shark.

NARRATOR: Meet what could be

the world's most dangerous shark?

The coastlines of the world are ground zero for most

encounters between humans and sharks.

The hunting grounds of notorious predators like the

bull shark, tiger,

and great white.

But there's another shark, that pound for pound maybe

more dangerous than all other sharks.

The oceanic whitetip.

You probably never heard of it,

because its domain is the deep seas.

But it's the shark,

the famed underwater explorer Jacques Cousteau called,

the most dangerous shark of them all.

MAN (over radio): I'm in trouble, mayday, mayday, mayday.

NARRATOR: When a plane crashes or boat sinks in the open sea

the oceanics often show up.

Earning the name, The Shipwreck Shark.

By some estimates over 1,000 survivors from plane crashes

and shipwrecks have been killed by the oceanic.

More than the great white,

bull and tiger sharks combined.

One of the prime spots for the oceanic is 16 kilometers

off the Bahamas.

Research scientists Brendan Talwar and Eric Schneider,

of the Cape Eleuthera Institute are here to run

demonstrations to reveal why the oceanic whitetip is as

formidable a predator as the great white shark.

BRENDAN: This is a species that was once referred to as the

most abundant predator over 100 pounds on earth.

BRENDAN (off-screen): They're basically very inquisitive sharks.

You know, they live in a place where food is scarce and

so when they get the chance to investigate something and

figure out what it is, they're usually interested in that.

NARRATOR: The first demonstration they'll run to

show the oceanics' skills is how they react to sound.

Like most sharks, oceanics have exceptional hearing.

They don't have shoreline buffets full of seals like the great white

or reefs of fish like tigers and bulls.

They survive in the middle of nowhere.

ERIC: The ocean is similar in a lot of ways to a desert ecosystem,

but I think the connotation with that is that

there's nothing out there.

ERIC (off-screen): There's no life, there's no nutrients.

There's actually a lot out here it's just

really spread out.

NARRATOR: Sharks usually respond to the sound of splashes,

fish in distress.

But the oceanic will often investigate new noises.

ERIC (off-screen): These pelagic sharks out in the open ocean,

they're using a number of different senses to try to

find their prey.

NARRATOR: Hearing may be the oceanics' longest-range sense,

better than sight or smell.

The sounds of boat engines or loud crashes travel for miles

out at sea.

Can this be a cue that attracts an oceanic shark?

Leading them to people?

To test this out Eric and Brendan will try to bait an

oceanic with only the sound of a boat engine.

BRENDAN (off-screen): The sound wave is going to reach the shark,

and they're going to pick up on it using these little

things that are similar to ears.

Basically, we don't see them, but they do have little holes.

NARRATOR: An oceanic's ear uses vibrating minuscule hairs

called stereocilia to signal the brain as sound.

They can pinpoint the location of a noise in any direction.

An underwater loudspeaker will broadcast the sound of a

propeller and its diesel rumble.

ERIC: Alright, the speaker's in,

I'm going to get kitted up with scuba gear,

and hop in and see if we can see anything.

NARRATOR: Eric will enter the water to observe if any

oceanics show up.

He's joined by cinematographer, Brocq Maxey.

Brocq uses an underwater coms system

to relay what's happening.

Brendan oversees the dive from the surface.

BRENDAN: Get the speaker on and hit play.

We've got the speaker down there.

BRENDAN (off-screen): Brocq and Eric are swimming around.

Hey, Brocq, can you hear me?

BROCQ: Everything looks good.

BRENDAN: These sharks are living in a habitat that is

devoid of any kind of structure,

it pays to be very curious and rely on things like sound

to investigate potential food sources.

NARRATOR: Is this an underwater dinner bell

for whitetips?

The team plays a dangerous waiting game.

An ocean away, in Hawaii, another team of researchers

are on a mission to find oceanic whitetips.

Marine Biologist Dr. Yannis Papastamatiou and

PHD candidate Sarah Luongo want to discover how the oceanic

finds food away from the fish-filled reefs.

YANNIS: Oceanic whitetip sharks are actually my absolute

favorite shark.

YANNIS (off-screen): And to me, what I admire the most about them is that they live

in essentially the oceanic equivalent of the desert.

They live in an environment where there's not much food,

it's not easy to make a living.

SARAH: The oceanics are something new for me,

being here in Hawaii, it's a new experience.

I studied great white sharks but being here and studying

this pelagic oceanic whitetip is, is a new experience.

NARRATOR: Sarah is here to help unravel a mystery.

Why do oceanic whitetips follow pods of pilot whales?

They aren't feeding on the whales,

they seem to be doing something even more extraordinary.

Oceanics could be using pilot whales to lead them to prey.

Enlisting the whales like hunting dogs guiding them

to quarry.

No other shark, not the tiger, bull,

even the infamous great white is known to do this.

YANNIS (off-screen): The two explanations that make the most sense to me

as to why they're following these pilot whales is related

to foraging.

YANNIS (off-screen): We know that pilot whales are diving deep,

and they're diving deep to catch prey.

And pilot whales, they have echolocation.

So they're much more efficient at hunting in deep, dark waters.

So potentially, could the sharks be following them,

going down deep and trying to get a free meal?

NARRATOR: To gather evidence if this unique behavior is true,

the team will attach a special camera tag called

a CATS Cam.

SARAH: The goal is to swim down from behind the shark,

put the clamp on the dorsal fin, nice and secure.

This will give us a great point of view of what the

shark is seeing in front of it.

After about 24 hours, these two links here are gonna corrode,

only the tag is going to pop off and that is gonna

float up to the surface.

And using this antenna, we can listen to this rhythmic

pinging sound.

SARAH (off-screen): So, that's going to allow us to go out and hone in on

where exactly the tag is in the water so we can recover it

and download the data.

NARRATOR: The tag will reveal the oceanics depth, speed,

and hopefully the first ever video footage of them hunting

deep with pilot whales.

It will be world-class free-diver Deron Verbeck's job

to attach the camera tag.

He has firsthand experience with the oceanics

"most dangerous" reputation.

DERON: I was out in the blue one day and had an oceanic.

I started swimming back towards the boat.

And, and as it was coming back,

it came at my stomach,

and I'm looking down on the top of the head,

and I saw the jaw slide out right in front of my stomach,

and it snapped, and it turned,

and then started going after my thigh.

DERON (off-screen): When I hopped up on the boat and turned around and sat down

the tips of my fins were still in the water and the shark

came up and snapped at my fins.

It was going to eat me if I stayed in the water.

NARRATOR: The team joins Colin Cornforth of the

Cascadia Research Collective.

They've been tracking pilot whales in the area.

YANNIS: Okay, so at 1,500 meters,

we're way off the reef.

YANNIS (off-screen): We're in oceanic whitetip habitat now.

We know they like deep water.

Generally, the upper 200 meters in the water column.

So let's go find some pilot whales

and then hopefully some sharks.

NARRATOR: Back in the Bahamas researchers Brendan Talwar and

Eric Schneider try to lure in an oceanic whitetip shark with

sound, not bait.

An underwater loudspeaker, broadcasts a low rumble of

a diesel engine.

Eric is on alert.

Since the speaker broadcasts in all directions,

the shark can come from anywhere.

Brocq Maxey, the underwater cinematographer

relays what happens to the surface.

BROCQ: It's pretty calm.

The conditions are perfect.

NARRATOR: A familiar airplane shape appears.

BROCQ: Guys, the oceanic is here!

NARRATOR: The "World's Most Dangerous Shark"

might not be the tiger, bull,

or great white,

but the oceanic whitetip.

To find out what makes the oceanic so remarkable,

shark researchers Brendan Talwar,

Eric Schneider and cinematographer Brocq Maxey

set up an experiment.

The team tries to lure in an oceanic through the

low frequency sound of a boat engine.

A noise not usually known to attract sharks.

But the ability to key into new noises makes the oceanic

a fearsome hunter.

Eric is there to observe.

Brocq uses an underwater coms system

to relay what happens to the surface.

BROCQ: Really great conditions.

BRENDAN: Awesome, alright, we're gonna, we're gonna hit play.

We know that the sharks are, are really tuned into hearing

low-frequency irregular noise.

NARRATOR: Like a siren's song, the broadcast boat engine

calls in the shark.

This oceanic might have heard it from 1.6 kilometers away.

BROCQ: It's coming down.

We've got a nice oceanic down here.

It's a big shark.

It's coming nice and close.

Really, really curious shark.

The oceanic immediately took interest in Eric.

Checking him out, swimming around him in circles.

The oceanic whitetip is still here.

It's still very active, but we're running low on air.

So Eric and I are gonna surface.

ERIC: It was awesome.

ERIC (off-screen): A nice big oceanic down there, there are not a lot of spots

in the world where you can still reliably find them,

we got lucky today obviously, but making noise got them here

pretty quick today.

BRENDAN (off-screen): There's still a lot to learn about sound in the

marine environment and what effects humans are having on

changing that soundscape, but sharks that live in the open ocean

definitely need every advantage that they can get

to locate prey in a place where its hard to find food.

So sound is one way to cue in on things from

a long distance away.

NARRATOR: The Bahamas team has shown how oceanics will

investigate any new noises, including the sound of a boat

engine and its propeller.

Back in Hawaii, Dr. Yannis Papastamatiou and

PHD candidate Sarah Luongo want to attach a camera on an

oceanic whitetip shark that may be using pilot whales to help them hunt.

Something no other shark is known to do,

not even the great white.

But finding pilot whales proves to be a struggle.

YANNIS: It's not that easy to see them out here especially

when there's getting a little bit of swell and the light's

getting low.

NARRATOR: No whales, but there are reports

of oceanic whitetips near an aquatic fish farm.

The team uses this discovery to their advantage.

YANNIS (off-screen): You can often see sharks around here.

So we're not going to tag any oceanic whitetips

if there are any here.

This is more just exploratory and just to take a look and

see if there's any sharks.

NARRATOR: The dive is a great test run for Deron.

A chance to see how close he can get to the shark when

he'll tag one with the whales.

It will also be a new experience for Sarah,

she's dived with great whites

but this will be her first time swimming with oceanics.

SARAH (off-screen): It's definitely easy to look at a shark and be

intimidated by it, but when I look at a shark,

I just see, you know, a beautiful incredible predator that

is just trying to make its way through life.

NARRATOR: Even so, Sarah knows any open water dive

with sharks can be dangerous,

she's aware of the warning signs of an attack.

SARAH: Similar to cats, they'll arch their backs.

SARAH (off-screen): They'll curve their pectoral fins under.

Things like that you want to keep an eye out for.

DERON: If you see a shark and I don't see it,

I need you to do something, I need you to yell 'shark'

through your snorkel.

SARAH: Okay. DERON: As loud as you can.

And then point at it and don't take your eye off of it.

COLIN: We just had an oceanic whitetip come up to our, our divers

in the water.

COLIN (off-screen): And it seems to be showing some bit of interest with the

divers right now.

NARRATOR: It's clear Deron won't have to chase the

sharks to put on a tag.

The oceanic circles closer.

Sarah's dived with great whites,

but that was from the safety of a cage,

out in the open water anything can happen with an oceanic.

NARRATOR: The oceanic whitetip has been called

"The World's Most Dangerous Shark."

Divers all over the world have felt its wrath.

It could be responsible for over 1,000 human fatalities,

more than all other sharks combined,

including the great white.

But little is known how this apex predator hunts prey

in the open ocean, far from fish filled reefs.

Biologist Dr. Yannis Papastamatiou and shark researcher

Sarah Luongo are in Hawaii to discover if oceanics

use pilot whales to help them find food.

Step one is an exploratory dive with a pair of oceanics.

It's researcher Sarah Luongo's first time swimming

with the oceanic.

SARAH (off-screen): Right now, we are just observing these sharks.

Watching their behavior and getting an idea of what it's

going to be like in the water when we're trying to tag the

sharks with the pilot whales.

DERON (off-screen): I'm just watching for body language of the sharks,

making sure there's not aggressive activity,

if they're starting to get territorial or, or aggravated with us.

NARRATOR: The sharks realize the team isn't food and

disappear into the blue.

The dive was a great test for how close Deron can get.

It was also a memorable first dive with oceanics for Sarah.

SARAH: It was incredible, it was awesome to see them in the water,

they're one of the most beautiful sharks I've ever seen,

and it was great to be face to face.

SARAH (off-screen): One of them was swimming with some pilot fish,

which is one of my favorite things to see.

NARRATOR: They've seen pilot fish,

now they need to find the pilot whales and deploy a

camera tag on the shark.

It could provide evidence of the oceanic whitetip doing

something no other shark is known to do,

not even the great white,

use a whale to help it find prey.

But they can't just tag any oceanic,

Yannis needs to get one on a shark following a pod.

SARAH: When we're out looking for the whales in the water,

it can be very challenging.

SARAH (off-screen): We're just trying to see any kind of movement on the water

that could indicate that there's whales and sharks there.

NARRATOR: Hours pass.

The tedium outweighed only by the drudgery of the search.

And then...

MAN (off-screen): Yeah! Nice!

MAN: So stoked. We got whales!

MAN: Yeah! Awesome.

COLIN: Really hoping that we have oceanic whitetip sharks

following this resident group right now.

DERON: So, plan here is to find a group of animals that are,

are fairly close together and move up ahead of the animals.

Just off to the side of them, we'll slide in,

hopefully there'll be a shark trailing behind them.

NARRATOR: It sounds simple, but oceanic whitetips change

their behavior around pilot whales.

Making them even more unpredictable.

DERON: Well, the oceanics can act a little differently when

they're around structure with pilot whales.

They tend to be a little more curious, they'll come in fast.

NARRATOR: This more aggressive behavior was seen in 2019,

in Tahiti.

A group of tourists also set out to follow pilot whales,

this time off the coast of Moorea.

Swimmers enjoy the serene French Polynesian seas

and the whales.

That's when the idyllic holiday turned into everyone's

worst nightmare.

An oceanic whitetip attacks.

A 35-year-old woman narrowly escapes with her life.

But the oceanic whitetip claims both her hands before

bystanders pull her to safety.

Although shark attacks are rare,

the tragedy in Moorea is a grim reminder that diving with oceanic whitetips,

especially those following pilot whales,

is incredibly dangerous.

YANNIS: Yeah, so Deron will be the one to try to get the tag

on and you just always want to make sure that someone's

watching his back because of another shark that might be

coming up behind.

So that's going to be my job,

just to basically provide safety.

SARAH: I'm excited to get in, my adrenaline's going and

hopefully watch Deron get a tag out.

DERON: If you see a shark, don't take your eyes off it.

NARRATOR: They have the whales,

the sound of their boat engine,

and their own splashing,

all calling cards for the oceanic whitetip.

NARRATOR: The oceanic whitetip,

what many consider the most dangerous shark in the world,

could be using pilot whales to lead them to food.

To discover if this extraordinary behavior is true,

shark experts Dr. Yannis Papastamatiou and Sarah Luongo

are in Hawaii to place a special camera on an oceanic.

They're joined by world champion free diver Deron Verbeck

on their quest.

Finally, a large pod of up to 20 whales.

A perfect chance to spot an oceanic.

COLIN: He's doing a surface interval.

Basically, oxygen enriching his blood before he

potentially will go back down diving underneath

to feed on squid.

NARRATOR: The pilot whales swim to over 900 meters deep

to feed.

This is the aphotic or midnight zone,

a world of perpetual darkness.

Most sharks that hunt at the surface,

like tigers and bull sharks, never travel to this abyss.

Great whites are one of the few that can hunt down here

and so can the oceanic whitetip.

YANNIS (off-screen): Oceanic whitetips we know out here, for example,

they go 600 meters.

In other places, they'll dive to 1,000 meters,

and down at those depths, there's certainly no light.

So it's going to be complete darkness for them.

YANNIS (off-screen): So they're going to be relying on other senses,

and it's also really cold, even for the sharks.

NARRATOR: Luckily, this whale pod is still on the surface.

The team is in the thick of it.

They have the whales, but on this dive,

no oceanics.

YANNIS: So, we had a nice pod of pilot whales.

They came right underneath us.

YANNIS (off-screen): Unfortunately, there's no sharks, which again,

you don't always see sharks with these pods.

And actually, one of the things we'd like to know is what

makes one pod attracted to sharks and not another.

SARAH: I just got out of the water; it was incredible.

SARAH (off-screen): There was a lot of action going on down there.

We didn't see any oceanics that decided to join this pod.

So, we're going to have to keep searching and hopefully

the next pod we'll have some.

YANNIS: We'll just have to come out tomorrow and

hopefully find them again.

NARRATOR: Off the Bahamas,

shark researchers Brendan Talwar

and Eric Schneider are also in search of the oceanic.

They're joined by cinematographer Brocq Maxey.

They want to explore what makes the oceanic whitetip

shark as formidable a predator as the legendary great white.

They've revealed the oceanic will investigate new noises in

their environment,

not just the sound of fish but even the whir of propellers,

and rumble of boat engines.

But to uncrown the great white as the most dangerous,

the oceanic needs more than great hearing.

It's often said...

speed kills.

And one look at a great white shark

and you know what that means.

Their bullet shape and short pectoral fins allow them to

shoot through the water and launch attacks.

An oceanic whitetip is the exact opposite.

A lanky drawn-out body anchored by

enormous pectoral fins.

It's scientific name, Carcharhinus longimanus,

meaning sharpened nose with long fingers,

perfectly captures this super shark.

Those "long fingers" allow the oceanic to slow

cruise huge distances.

Like eagles of the sea, they glide on the currents

in search of prey.

Slow and steady wins the race for the oceanic whitetip.

They can swim over 48 kilometers a day

while on a hunt.

But the oceanic whitetip have been known to kick it

up in gear.

Brendan and Eric want to observe how fast the oceanic

can get by using a troll cam.

BRENDAN: Fishermen will often throw cameras like this out

just to get an idea of what's attacking their baits.

BRENDAN (off-screen): Plus, it's just cool footage.

NARRATOR: It's dragged behind the boat.

They rev up the speed

and see if the oceanic can keep up.

The oceanic easily showcases its sped-up nature.

At 16 kilometers per hour, it's just under the

white shark's maximum speed.

BROCQ (off-screen): When it comes to their flat-out speed,

we know, just, a tuna for instance is a fast fish,

and we know that they, that's part of their prey.

NARRATOR: Tuna are one of the fastest fish.

So, oceanics can become speed demons when hungry.

Conserving their energy until the fatal moment and then,

they're torpedoes with teeth.

Not only are the oceanics nearly as fast as a great white,

but just like their famous cousins' superpower.

Oceanic whitetips can go airborne too.

NARRATOR: The oceanic whitetip,

sometimes called the world's most dangerous shark has a

deadly array of weapons to track and kill prey.

Shark researchers Brendan Talwar,

Eric Schneider and cameraman Brocq Maxey have shown how the

oceanic uses speed to launch their attacks.

A special troll camera highlights their incredible

burst velocity.

BROCQ (off-screen): They're quick, they're very maneuverable,

they are fast, they obviously can put on some power.

NARRATOR: Oceanic whitetips could be using that power just

like the great white.

Everyone knows about the white shark's aerial gymnastics.

The oceanic might be going airborne too.

YANNIS: So, we had one shark, for example,

that accelerated from 160 meters deep, vertically,

till it cleared the surface at four meters a second.

So, if you imagine you're on the surface and you have a

shark coming from 160 meters deep that fast,

you know, that would be on you very, very quickly.

YANNIS (off-screen): Other reasons that have been put forward for breaching is

one is to get rid of parasites.

There has been some idea that it may be related to signaling

between sharks, we can't rule anything out at this point.

NARRATOR: The oceanic is competitive with the great white

in hearing, speed,

leaping,

and diving to extraordinary depths in search of food.

But there might be one thing the oceanic does that the

great white doesn't, use another species to find prey.

In Hawaii, the team searches for oceanic whitetips trailing

a pod of pilot whales.

They find the whales

but no sharks.

They decide on a new plan.

Find a shark and place the camera tag on a solitary

oceanic in the hope it connects with a nearby pod.

All eyes are on Deron and his skill as a free diver.

DERON: Trying to clamp a camera package onto a dorsal

fin of an oceanic, a free-swimming oceanic shark,

is going to be extremely dangerous.

DERON (off-screen): All of a sudden, I just see this thing coming in.

NARRATOR: Of course, the oceanic isn't shy.

DERON (off-screen): And it just kept getting bigger and bigger and bigger.

NARRATOR: Deron seizes the moment.

The missed tag is the least of Deron's worries.

DERON (off-screen): I turned around, and I looked off to the side,

and another smaller one was coming in.

NARRATOR: With two sharks, he's vulnerable to an attack

from the other when he goes in for the tag.

Yannis needs to keep an eye on Deron's blind side.

One last chance.

Triumph!

DERON: Yeah!

SARAH (off-screen): Awesome.

DERON: Oh yeah!

Got the tag on!

YANNIS (off-screen): Nice.

NARRATOR: The team celebrates,

but it's a short-lived victory.

The next challenge comes the following day.

They need to retrieve the camera after the clamp

dissolves and floats to the surface.

Sarah and Yannis' task is nearly impossible.

Find a camera tag in the world's biggest ocean.

NARRATOR: Shark experts Dr. Yannis Papastamatiou and Sarah Luongo,

need to retrieve a special camera tag placed on

what may be the world's most dangerous shark,

the oceanic whitetip.

The tag may reveal how oceanics use pilot whales to

help them find prey.

But all is lost if they can't find the tag.

They track it through a radio signal.

YANNIS: So, we're out in open ocean, we have a tag,

that's floating on the surface.

If the currents take it north of the island it's going to

become very difficult to recover,

so we really want to get it as soon as possible.

YANNIS (off-screen): How strong is the signal?

SARAH: The signal's pretty strong,

the gain's about quarter of the way,

I'm guessing it's a couple hundred meters

in this direction.

YANNIS: Okay, we must be getting pretty close then.

NARRATOR: Unfortunately, the signal only weakens,

and the tag is lost at sea along with its data.

But luckily a photo Deron Verbeck took provides a clue

into the oceanic's behavior.

Tell-tale sucker marks from a giant squid's tentacles raked

along the side of an oceanic.

YANNIS: We don't know, again, if they are following the

pilot whales down deep and using the pilot whales to find

the prey.

For example, the pilot whales, again, they have echolocation.

So they're very efficient hunters down in the deep

where it's dark.

YANNIS (off-screen): They could be finding patches of squid, for example.

So, prey down there is often going to occur in patches.

So, if you get in on a patch, you might be able to get quite

a few prey items within a short period of time.

NARRATOR: But the oceanic might be taking its

super-skills to find prey in new hunting grounds.

YANNIS (off-screen): The oceanic whitetip is really,

its a tropical or sub-tropical species,

but something to consider is that as we face

changing climates, that means that water temperatures are

changing and generally getting warmer.

YANNIS (off-screen): So, you may start to see, for example,

reports of oceanic whitetips extending further north as

some of those water starts to warm up.

So, the distribution of these animals may start to change

over the next several decades.

NARRATOR: Incredibly, they've been spotted off the

coast of Sweden.

An oceanic even attacked a boat off of Cornwall, England.

Who knows where they'll turn up in the future?

What could be the world's most dangerous shark

may be expanding its range.

It's extraordinary abilities, from surviving out in the open

ocean to maybe using whales to find prey might make it the

ultimate predator to be reckoned with.

YANNIS: I try to avoid terms like smart,

because those are human terms.

YANNIS (off-screen): And when you interact with them,

when you see them in the wild, again,

you can see them looking at you.

You can just sort of get this feeling that these, these animals are

checking you out, and there's something going on behind them.

NARRATOR: But what might be the most dangerous shark could

also be one of the most endangered sharks.

BRENDAN: Oceanic whitetips have seen dramatic population

declines in the past 50-plus years on the order of 50 to 95

plus percent in different parts of the world.

SARAH (off-screen): The more over fishing that occurs on that species,

the greater the chances are that future generations will

never be able to see an oceanic whitetip.

DERON (off-screen): It would be really disappointing to find out that

we've lost all of the oceanics.

I mean, these are an important,

it's like, it's like losing a wolf in the forest.

NARRATOR: It's not as well-known as the tiger,

the bull or the great white

but pound for pound the oceanic whitetip might be the true

ruler of the deep.

Captioned by Cotter Media Group.