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(THEME MUSIC PLAYS)
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NARRATOR: Welcome to North America.
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The most diverse continent on Earth.
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The only place where you can find
every landscape from polar ice cap...
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to baking desert,
and everything in between.
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Whatever the neighborhood,
there's a hero who can make it a home.
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Smart, tough, brave, you name it.
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They all have what it takes to thrive
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in the wildest,
most beautiful continent on Earth.
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SINGER: Patchwork quilt of life
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Wildness never dies
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Beauty always thrives
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Under these spacious skies
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(MUSIC FADES)
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(LIVELY MUSIC PLAYING)
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NARRATOR: The wild Northwest of America.
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Majestic mountain ranges march north
for over 2,000 miles,
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from Wyoming to Alaska,
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and onwards into the great wilderness
of the Arctic.
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This is a world of epic winters
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and brief, spectacular summers,
where timing is everything.
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(MUSIC FADES)
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NARRATOR: There's a new ruler
in the Arctic.
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The pack's relying on her
to find the food they'll need
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to get through the tough months ahead.
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Their home is Ellesmere Island,
as far north as you can go.
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-(WOLVES HOWLING)
-(BIRDS CHIRPING)
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NARRATOR: Food is scarce.
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The wolves search a territory
larger than any other wolf pack on Earth.
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Forty times the size of Washington, D.C.
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They're in luck.
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-(SNIFFING)
-She's picked up a scent.
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(HOWLING)
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NARRATOR: But this prey will test the pack
to their limit.
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(TENSE MUSIC PLAYING)
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Musk ox. Relics of the Ice Age.
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Five foot high and 800 pounds
of pure attitude.
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(MUSK OX GRUNTING)
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(GRUNTS)
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NARRATOR: An adult ox
could definitely kill a wolf.
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(GRUNTS)
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NARRATOR: But this herd has calves,
and with the right game plan,
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the pack could take one down.
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(WOLF HOWLING)
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NARRATOR: The howl says,
"It's time to hunt."
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(TENSE MUSIC SWELLS)
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NARRATOR: The alpha female goes out front
to spook the herd.
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She wants to get them running,
to tire them out and separate the young.
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(GRUMBLES)
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NARRATOR: She chooses the two fastest
wolves to help her push the herd
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into a 40-mile-per-hour sprint.
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She's got a calf,
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but her teammates
aren't watching her back.
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(WOLF WHIMPERING)
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NARRATOR: The wolves' mistake
gives the musk ox time to regroup.
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(MUSK OX SNORTING)
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NARRATOR: A wall of horns
surround the calves.
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Shoulder to shoulder, they're unbreakable.
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(MUSIC SETTLES)
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This hunt is over.
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It's a stalemate.
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A strong leader knows when to back down.
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(MUSK OX GRUMBLING)
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NARRATOR: With this opportunity lost,
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it's going to be a long and hungry winter
for this wolf pack.
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In Alaska, the first snow covers the peaks
of the Aleutian Range.
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(INTENSE MUSIC PLAYING)
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Where these mountains meet the sea,
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another northerner needs to pack on
the pounds before the winter comes.
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(BEAR GROANS)
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NARRATOR: A brown bear.
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Survival superpower? An iron stomach.
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The smell of this rotting whale carcass
is attracting bears
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from as far as 20 miles away.
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Males are usually bad-tempered loners.
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(BLUESY GUITAR MUSIC PLAYING)
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But each bear needs
up to 60,000 calories a day
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to get fat enough to make it
through the winter hibernation.
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So, they've called a truce.
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It's pretty rare to see this many together
on a carcass.
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Thirty tons of rotting flesh
doesn't just wash up every day.
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(BIRD CALLING)
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NARRATOR: When bulking up,
brown bears can eat for 20 hours straight.
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(BEAR GRUNTS)
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NARRATOR: Oh, whoa.
I think he's overdone it.
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Time for an ice bath.
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Oh, man.
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These guys have timed things just right,
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fattening up
before the Alaskan winter strikes.
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(MUSIC FADES)
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(MAJESTIC MUSIC PLAYING)
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In the Teton Mountains of Wyoming,
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another American icon is planning
even further ahead.
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(BIRDS CALLING)
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NARRATOR: This female moose
has spent the year alone.
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With fall here, she wants to become a mom.
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And now, she's the center of attention.
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(JAUNTY MUSIC PLAYING)
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This huge male has been on her for days.
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(MOOSE BELLOWS)
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NARRATOR:
Sure, he's got five-foot antlers.
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But they can hit six-foot.
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Let's just say
she's keeping her options open.
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Now, this guy has got her attention.
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Tall, dark, and handsome.
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He's got moves.
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Impressive!
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These two will fight over the right
to mate with the female.
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But only when she decides
the time is right.
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If she mates right now, her calf
will be born in the middle of winter
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and may not survive.
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If she holds out just a little bit longer,
it could be born in the warmth of spring.
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(MUSIC FADES)
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Timing is everything.
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After a month,
things get a little... hmm, weird.
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-(MOOSE CALLING)
-(WHIMSICAL MUSIC PLAYING)
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NARRATOR: Sniffing...
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thrashing...
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(GULPS)
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NARRATOR: And quite a bit of this.
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(URINE TRICKLING)
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NARRATOR:
Male urine is full of pheromones,
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sort of a moose aphrodisiac.
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She has to resist it, though.
It's still too early.
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-(MOOSE SNORTS)
-NARRATOR: Just be patient, big guy.
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Two months in, and winter shows its hand.
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(MUSIC FADES)
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With colder temperatures...
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come shorter days.
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That's the cue she's been waiting for.
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Now, she's ready.
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And the bulls know it.
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(OMINOUS MUSIC PLAYING)
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(ANTLERS CLATTERING)
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(MOOSE SNORTING)
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NARRATOR: Their neck muscles
have doubled in size over the summer
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in preparation for this exact moment.
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(ANTLERS CLATTERING)
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NARRATOR: They leverage
1,600 pounds of power...
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to breaking point.
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-(ANTLER CRACKS)
-(MOOSE GROANS)
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(BIRD CHIRPING)
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NARRATOR: The antler will grow again.
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Now, his pride? That'll take some healing.
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(MOOSE SNORTS)
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NARRATOR:
Our female's got her timing right.
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Her calf will be born
eight months from now,
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at the best possible time.
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But first, there's winter to deal with.
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(WINDS HOWLING)
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NARRATOR: The mountains of the Northwest
are the tallest in North America.
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Many over 14,000 feet.
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And they see some of
the most extreme winter weather on Earth.
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(MAJESTIC MUSIC PLAYING)
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Humid air blows in from the Pacific.
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It crashes against the frozen peaks.
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Resulting in epic snowfall.
Up to 100 feet in a single year.
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(MUSIC INTENSIFIES)
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NARRATOR: The further north you go,
the harder the winter hits.
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Alaska is the northernmost state
in the U.S.,
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though even here,
there's one place which doesn't freeze.
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The Chilkat River,
heated from below by geothermal vents.
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Chilkat means "salmon storehouse"
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in the language of
the local Tlingit people.
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And one hungry American hero
knows just why.
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(BIRDS CHIRPING)
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NARRATOR: This young bald eagle's
been struggling to find food.
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Most eagles don't make it
through their first winter.
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But here,
because the river doesn't freeze,
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he can access dead fish
from the salmon run...
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(EAGLE CALLING)
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NARRATOR: ...to boost his chances
of survival.
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Only problem is, he's got company.
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(FOREBODING MUSIC PLAYING)
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Well, that's intimidating.
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Almost 4,000 bald eagles
come to feed here every winter.
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The largest gathering in the world.
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And it's every eagle for itself.
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(EAGLE CALLING)
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NARRATOR: With a wingspan of eight feet,
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the females are the largest
and the most aggressive.
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(EAGLE SCREECHING)
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NARRATOR: That head tilt tells him,
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"You don't want any problems.
Back off. The fish is mine."
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(EAGLE SCREECHING)
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NARRATOR: He's hungry,
but he's also afraid of getting hurt.
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(MUSIC SETTLES)
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From the sidelines,
he can see that around here,
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you have to fight to survive.
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(BIRDS CHIRPING)
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(CHIRPING)
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(EAGLES CHATTERING, SQUAWKING)
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(CHIRPING)
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00:17:18,704 --> 00:17:19,913
(EAGLE CHIRPING)
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00:17:21,749 --> 00:17:23,500
(SCREECHING)
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00:17:30,090 --> 00:17:31,967
(FRANTIC CHIRPING)
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NARRATOR: He could hold back, stay safe,
and face starvation.
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00:17:44,271 --> 00:17:46,356
But he decides to risk it all.
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(SCREECHING)
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(TENSE MUSIC BUILDS)
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(EAGLES CHIRPING)
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NARRATOR: Through sheer determination,
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he’s fought off the elders
and staked his claim.
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These vital calories will help him
through the hard months ahead.
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Nowhere does winter like here.
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Denali, the highest mountain
in North America,
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and at minus 100 degrees,
the coldest on Earth.
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(WINDS HOWLING)
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NARRATOR: With the last light disappearing
over the horizon,
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00:19:04,184 --> 00:19:09,565
the clock starts on the hardest,
darkest months of the year.
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Though sometimes,
there's magic in the air.
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The absolute dark makes Alaska
one of the best places on Earth
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to witness the aurora borealis.
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(GRANDIOSE MUSIC PLAYS)
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NARRATOR: In Ellesmere, polar winds
rip through the barren hills.
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00:20:15,839 --> 00:20:17,507
(WINDS WHISTLING)
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00:20:17,633 --> 00:20:22,554
(MUSK OX GRUMBLING)
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00:20:27,726 --> 00:20:29,645
NARRATOR: You can’t complain
about the cold
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00:20:29,895 --> 00:20:32,481
when your ancestors survived the Ice Age.
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00:20:33,899 --> 00:20:35,275
(MUSK OX GRUNTING)
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00:20:35,525 --> 00:20:41,281
NARRATOR: Under their long guard hairs,
the musk oxen have grown a fine underwool,
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00:20:41,907 --> 00:20:44,451
the warmest fiber in the world.
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In the dead of winter,
they slow their metabolism by 30 percent.
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00:20:52,709 --> 00:20:55,504
(OXEN GRUMBLING)
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00:20:59,299 --> 00:21:01,843
NARRATOR:
They're the ultimate arctic survivors.
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00:21:02,386 --> 00:21:05,472
Staying slow to stay alive.
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00:21:07,015 --> 00:21:10,769
-(WINDS WHIPPING, WHISTLING)
-(ETHEREAL SINGING)
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00:21:12,980 --> 00:21:16,692
NARRATOR: Winter takes northern heroes
to their limits.
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But eventually, the good times return.
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Spring.
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00:21:28,578 --> 00:21:31,081
(VOCALS, MUSIC SWELL)
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00:21:41,174 --> 00:21:44,386
NARRATOR: The warmth
sweeps northwards into Alaska.
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00:21:58,900 --> 00:22:01,361
A wake-up call for brown bears.
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00:22:01,570 --> 00:22:02,738
(MUSIC FADES)
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00:22:03,196 --> 00:22:06,074
A mom and her two new cubs.
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00:22:06,742 --> 00:22:08,160
(BIRDS CHIRPING)
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00:22:08,243 --> 00:22:09,328
(BEAR GRUNTS)
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00:22:09,453 --> 00:22:12,164
NARRATOR: She nursed them
through the winter inside her den...
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00:22:14,958 --> 00:22:17,669
but it cost 30 percent of her body weight.
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00:22:18,503 --> 00:22:20,213
She needs to eat fast.
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00:22:21,006 --> 00:22:23,133
(CUBS GRUNTING)
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00:22:23,300 --> 00:22:26,553
NARRATOR: The cubs are just enjoying
their newfound freedom.
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00:22:27,429 --> 00:22:29,598
(GENTLE MUSIC PLAYING)
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00:22:31,600 --> 00:22:35,270
A snow day. It's the ultimate cure
for cabin fever.
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00:22:36,063 --> 00:22:37,230
Gotcha!
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(CUBS GRUNTING)
247
00:22:55,999 --> 00:22:59,586
NARRATOR: The only way to get
these little guys' attention is milk.
248
00:23:01,546 --> 00:23:07,427
(CUBS WHINING, GRUNTING)
249
00:23:08,011 --> 00:23:11,223
NARRATOR: Out of the den,
their intake quadruples.
250
00:23:18,313 --> 00:23:20,816
They’ll need over a half gallon a day.
251
00:23:27,239 --> 00:23:30,492
To keep the family fed,
she follows her nose.
252
00:23:31,618 --> 00:23:34,246
Two thousand times more sensitive
than ours.
253
00:23:42,087 --> 00:23:47,676
Jackpot! A termite nest,
full of protein-packed insects.
254
00:23:50,679 --> 00:23:51,972
(CUB WHINES)
255
00:23:58,687 --> 00:24:01,231
NARRATOR: It’s their first taste
of solid food.
256
00:24:01,523 --> 00:24:02,983
(CUB GRUNTING)
257
00:24:04,860 --> 00:24:06,987
NARRATOR: Though this meal bites back.
258
00:24:13,452 --> 00:24:19,249
This snack buys Mom some time,
but there’s not much else up here to eat.
259
00:24:23,879 --> 00:24:29,551
She knows that if she can just get them
down the mountain, a feast awaits.
260
00:24:40,604 --> 00:24:43,607
(WINDS HOWLING)
261
00:24:47,110 --> 00:24:51,323
NARRATOR: She’s not the only new mom
who needs to step up for her family.
262
00:24:57,454 --> 00:24:59,414
(WOLF HOWLING)
263
00:25:03,210 --> 00:25:06,296
NARRATOR: The Ellesmere wolf pack
made it through the winter.
264
00:25:07,297 --> 00:25:09,174
(PUP YELPING)
265
00:25:10,008 --> 00:25:11,760
NARRATOR: They got four new pups to feed.
266
00:25:24,397 --> 00:25:27,317
A musk ox calf
won’t feed them all this time.
267
00:25:30,445 --> 00:25:32,948
Taking on an adult is high risk.
268
00:25:36,117 --> 00:25:39,496
But the alpha knows
there’s no other choice.
269
00:25:41,665 --> 00:25:45,043
In 24-hour daylight,
there’s nowhere to hide.
270
00:25:46,086 --> 00:25:49,756
So, the pack stalks downwind
to hide their scent.
271
00:25:50,382 --> 00:25:51,925
(MUSK OX GRUNTS)
272
00:25:52,801 --> 00:25:54,553
(TENSE MUSIC PLAYING)
273
00:26:04,563 --> 00:26:07,524
NARRATOR: Like before,
the fastest split the herd
274
00:26:07,691 --> 00:26:09,943
and single out a weak adult.
275
00:26:16,658 --> 00:26:19,911
This time, the rest of the pack closes in.
276
00:26:20,954 --> 00:26:23,957
-(MUSK OX GRUMBLES)
-(WOLVES WHINING)
277
00:26:24,958 --> 00:26:27,919
-(MUSK OX GROWLS)
-(WOLVES CHATTERING)
278
00:26:28,086 --> 00:26:32,424
NARRATOR: It’s an ancient battle
between two heroes of the frozen north.
279
00:26:32,549 --> 00:26:34,467
-(WOLVES YELPING)
-(MUSK OX GROANING)
280
00:26:34,718 --> 00:26:37,637
(WOLVES BARKING)
281
00:26:37,804 --> 00:26:41,933
NARRATOR: And the pups, they're learning
the art of the hunt through their elders.
282
00:26:42,100 --> 00:26:44,519
-(WOLVES GROWLING)
-(PUPS YELPING, HOWLING)
283
00:26:48,732 --> 00:26:50,317
-(WOLVES GROWLING, BARKING)
-(MUSK OX GRUNTING)
284
00:26:57,282 --> 00:26:58,700
(CHEWING)
285
00:26:58,950 --> 00:27:00,660
(MUSK OX GROANING)
286
00:27:05,457 --> 00:27:07,375
NARRATOR:
Thanks to the alpha's leadership,
287
00:27:07,459 --> 00:27:11,504
the pack will thrive
on the arctic edge of America.
288
00:27:19,137 --> 00:27:24,768
On the Cascade Range in Washington State,
the snow has almost disappeared.
289
00:27:27,145 --> 00:27:28,647
Even Mount Baker,
290
00:27:29,689 --> 00:27:33,485
holder of the world record
for highest snowfall in a single winter,
291
00:27:34,235 --> 00:27:35,612
is shedding its coat.
292
00:27:38,281 --> 00:27:42,952
The 50-foot winter snowpack
feeds huge glaciers.
293
00:27:47,415 --> 00:27:53,046
And as the spring sun shines down,
the snow and ice begin to melt.
294
00:27:55,256 --> 00:28:00,595
-(ICE CRACKING, WATER DRIPPING)
-(GLACIERS RUMBLING)
295
00:28:07,811 --> 00:28:12,232
NARRATOR: Drops become trickles,
trickles become streams,
296
00:28:12,691 --> 00:28:16,319
until a flood of water
lubricates the glacier.
297
00:28:21,700 --> 00:28:24,411
A river of ice slides down the mountain...
298
00:28:25,120 --> 00:28:29,708
(ICE, ROCK RUMBLING)
299
00:28:33,920 --> 00:28:36,339
NARRATOR: ...forming condo-sized
crevasses,
300
00:28:38,174 --> 00:28:41,261
and relentlessly grinding stone to rubble.
301
00:28:53,022 --> 00:28:57,444
Glaciers carve some of
America’s most iconic landscapes.
302
00:29:02,240 --> 00:29:05,994
From the Alaskan Range to the Cascades,
303
00:29:07,287 --> 00:29:12,542
where 26 glaciers flow down
the volcanic slopes of Mount Rainier.
304
00:29:16,880 --> 00:29:21,050
As the weather warms,
more and more ice melts,
305
00:29:21,342 --> 00:29:23,386
pouring down the mountainside.
306
00:29:27,265 --> 00:29:29,726
Transforming alpine valleys.
307
00:29:32,562 --> 00:29:36,274
-(BIRDS CHIRPING)
-(INSECTS BUZZING)
308
00:29:38,401 --> 00:29:42,405
NARRATOR: After eight months of snow,
the meadows erupt with color.
309
00:29:44,908 --> 00:29:47,577
As thousands of wildflowers bloom...
310
00:29:52,081 --> 00:29:55,919
the slopes of Mount Rainier
are known as “Paradise.”
311
00:29:56,336 --> 00:30:00,006
The perfect home
if flowers are your favorite food.
312
00:30:03,968 --> 00:30:06,513
A marmot and his mate.
313
00:30:07,931 --> 00:30:11,476
Just awake after nearly eight months
of hibernation.
314
00:30:14,103 --> 00:30:18,358
Like the bears, they’ve lost a third of
their body weight underground,
315
00:30:18,441 --> 00:30:19,776
and need to eat.
316
00:30:20,485 --> 00:30:23,112
Right now though,
they’re running on empty
317
00:30:23,613 --> 00:30:27,784
and just the thought of a flower is...
exhausting.
318
00:30:29,494 --> 00:30:30,787
(EXHALES)
319
00:30:33,498 --> 00:30:37,752
NARRATOR: Cool mountain mornings
make it extra tough to get going.
320
00:30:42,465 --> 00:30:45,301
The grown-ups catch some rays to warm up.
321
00:30:46,886 --> 00:30:49,389
(BEE BUZZING)
322
00:30:56,187 --> 00:30:58,857
And the kids beat them down to breakfast.
323
00:30:59,232 --> 00:31:01,025
(GENTLE MUSIC PLAYING)
324
00:31:07,448 --> 00:31:11,494
These growing boys have to do
all their eating for the whole year
325
00:31:11,619 --> 00:31:13,997
in the four months
while they’re above ground.
326
00:31:15,915 --> 00:31:19,377
They can eat half their body weight
in flowers every day.
327
00:31:21,838 --> 00:31:24,465
Those flowers are packed
with sweet nectar,
328
00:31:25,508 --> 00:31:29,262
so it’s not long before the sugar rush.
329
00:31:29,596 --> 00:31:32,932
(MARMOTS SQUEAKING)
330
00:31:33,975 --> 00:31:37,103
NARRATOR: Roughhousing provides
a long-overdue workout.
331
00:31:37,353 --> 00:31:39,272
(CONFRONTATIONAL MUSIC PLAYING)
332
00:31:39,689 --> 00:31:42,400
It's the fastest way
to build muscle tone and strength.
333
00:31:44,402 --> 00:31:46,821
(BOTH SCREECHING)
334
00:32:01,085 --> 00:32:03,630
NARRATOR: Oh, come on! No biting!
335
00:32:06,966 --> 00:32:09,594
Some nice moves! Not bad.
336
00:32:12,096 --> 00:32:15,266
(BOTH SCREECHING)
337
00:32:17,852 --> 00:32:19,562
(MUSIC CONCLUDES)
338
00:32:22,857 --> 00:32:24,067
NARRATOR: A clear winner.
339
00:32:24,609 --> 00:32:27,320
Now, back to the buffet.
340
00:32:28,655 --> 00:32:32,825
The marmots will make every moment
and every mouthful count,
341
00:32:33,743 --> 00:32:35,370
while paradise blooms.
342
00:32:38,164 --> 00:32:43,002
On the neighboring mountain,
a cousin of the marmots is even busier.
343
00:32:46,547 --> 00:32:48,591
An all-American architect.
344
00:32:49,342 --> 00:32:51,594
-(BIRDS CHIRPING)
-(ENERGETIC MUSIC PLAYING)
345
00:32:56,516 --> 00:32:57,684
NARRATOR: A beaver.
346
00:32:58,893 --> 00:33:00,979
He's doing what beavers do best.
347
00:33:03,815 --> 00:33:06,734
He’s building a dam to create a pond.
348
00:33:11,322 --> 00:33:15,368
A family of four can build
almost five feet of dam a day.
349
00:33:19,747 --> 00:33:23,835
Their pond is a barrier,
keeping predators away from their lodge,
350
00:33:24,836 --> 00:33:26,170
their family home.
351
00:33:35,805 --> 00:33:38,766
And pond-building here
has other significance,
352
00:33:38,850 --> 00:33:40,852
as this is no ordinary mountain.
353
00:33:42,311 --> 00:33:44,981
This is Mount Saint Helens.
354
00:33:47,608 --> 00:33:50,903
In 1980, this volcano erupted
355
00:33:51,529 --> 00:33:55,867
with the power of 25,000 atomic bombs.
356
00:33:56,534 --> 00:33:58,578
(EXPLOSIONS)
357
00:34:03,833 --> 00:34:06,794
NARRATOR: Thirteen hundred feet
blew off the summit...
358
00:34:10,423 --> 00:34:13,885
leaving a crater
the size of a thousand football fields.
359
00:34:16,929 --> 00:34:19,140
The explosion ripped through the forest...
360
00:34:21,434 --> 00:34:24,312
leveling an area as large as Chicago.
361
00:34:28,775 --> 00:34:31,402
Thousands of trees were blown
from the hillside
362
00:34:31,944 --> 00:34:33,863
and plunged into Spirit Lake.
363
00:34:40,536 --> 00:34:42,080
Nothing survived.
364
00:34:46,459 --> 00:34:48,669
It looked like a wasteland.
365
00:34:50,088 --> 00:34:51,714
(HOPEFUL MUSIC PLAYING)
366
00:34:51,881 --> 00:34:55,676
But amongst the devastation,
the beavers saw potential.
367
00:34:57,512 --> 00:35:01,682
With running water and plenty of
shattered wood for building materials,
368
00:35:02,809 --> 00:35:05,686
they moved in and got to work...
369
00:35:08,064 --> 00:35:13,069
the population soon growing
as their network of dams and ponds spread.
370
00:35:23,996 --> 00:35:28,835
In just 40 years, these eco-engineers
transformed Mount Saint Helens
371
00:35:28,960 --> 00:35:30,878
into a wetland paradise.
372
00:35:37,927 --> 00:35:42,014
Their dams hold back water
that would otherwise flow away.
373
00:35:47,228 --> 00:35:51,941
They provide water for plants
and a home for hundreds of animal species.
374
00:35:56,737 --> 00:35:58,656
(DUCKLINGS CHIRPING)
375
00:36:01,993 --> 00:36:04,120
(BIRD SQUAWKING)
376
00:36:08,082 --> 00:36:11,919
NARRATOR: The beavers have brought
nature back, big time.
377
00:36:17,049 --> 00:36:18,593
(BIRD CALLING)
378
00:36:19,635 --> 00:36:21,387
NARRATOR: And the benefits
of their hard work
379
00:36:21,470 --> 00:36:24,056
are felt far beyond this neighborhood.
380
00:36:28,853 --> 00:36:31,439
By slowing the flow of water
down the mountain,
381
00:36:32,273 --> 00:36:34,775
their ponds keep rivers
running year-round...
382
00:36:37,236 --> 00:36:40,156
feeding lush forests
with nutrient-rich water
383
00:36:40,239 --> 00:36:42,241
all the way to the Pacific...
384
00:36:48,956 --> 00:36:52,960
where one of the greatest shows
on Earth is about to begin.
385
00:36:59,050 --> 00:37:04,722
Every fall, the Pacific Northwest
is the setting for the salmon run.
386
00:37:07,892 --> 00:37:11,437
After years at sea,
millions of salmon gather,
387
00:37:11,938 --> 00:37:15,483
driven by the instinct
to swim upriver and breed.
388
00:37:20,488 --> 00:37:21,948
In Northern California,
389
00:37:22,198 --> 00:37:25,993
they must squeeze through the narrow mouth
of the Klamath River.
390
00:37:31,791 --> 00:37:34,877
Predators swim in
from hundreds of miles away,
391
00:37:35,628 --> 00:37:37,755
timing their arrival for this event.
392
00:37:47,598 --> 00:37:52,103
Sea lions, they’re just waiting
for the fish to make the first move.
393
00:38:00,778 --> 00:38:05,116
As the tide rises, the salmon surge
towards the river's mouth.
394
00:38:17,295 --> 00:38:20,673
Squeezed together,
they have no room to maneuver.
395
00:38:24,385 --> 00:38:28,055
The sea lions use the waves
to turbo-boost their chase.
396
00:38:30,725 --> 00:38:32,351
(GULLS CAWING)
397
00:38:33,019 --> 00:38:35,104
NARRATOR: They single out
individual salmon...
398
00:38:37,273 --> 00:38:38,858
and drive them onto the beach.
399
00:38:44,572 --> 00:38:47,074
Around here, you gotta eat fast.
400
00:38:48,075 --> 00:38:51,245
There could be a larger sea lion
on the next wave.
401
00:38:55,541 --> 00:38:57,251
A thousand-pound thief
402
00:38:57,335 --> 00:39:00,379
looking to muscle in
and steal your hard-earned lunch.
403
00:39:04,425 --> 00:39:05,426
(SEA LION SNORTS)
404
00:39:07,511 --> 00:39:10,348
(SEA LIONS BELLOW)
405
00:39:17,063 --> 00:39:21,067
(TENSE MUSIC BUILDS)
406
00:39:22,651 --> 00:39:24,653
(SEA LIONS ROAR)
407
00:39:28,324 --> 00:39:31,827
NARRATOR: For a month,
every high tide is a feeding frenzy...
408
00:39:34,288 --> 00:39:37,416
as sea lions and seabirds
gorge themselves.
409
00:39:37,833 --> 00:39:40,544
(SEA GULLS CALLING)
410
00:39:44,006 --> 00:39:45,466
(SEA LION ROARS)
411
00:39:50,304 --> 00:39:51,680
(SEA LION ROARS)
412
00:39:52,932 --> 00:39:56,602
NARRATOR: Every sea lion
eats up to 35 pounds of fish a day.
413
00:40:03,317 --> 00:40:07,071
But there are so many salmon
that 98 percent make it through.
414
00:40:16,872 --> 00:40:21,585
By late summer, the fish are returning
to rivers all along the northwest coast.
415
00:40:25,005 --> 00:40:30,511
Alaska’s Bristol Bay
hosts the largest salmon run in the world.
416
00:40:33,889 --> 00:40:38,352
Up to 65 million sockeye salmon
are swimming upstream.
417
00:40:39,687 --> 00:40:42,565
Their journey
might be several hundred miles.
418
00:40:53,534 --> 00:40:57,246
And these amazing navigators
use their sense of smell
419
00:40:57,329 --> 00:40:59,915
to guide them back
to the exact patch of river
420
00:41:00,374 --> 00:41:02,626
where they hatched four years ago.
421
00:41:11,594 --> 00:41:13,471
(BIRDS CHIRPING)
422
00:41:14,555 --> 00:41:17,141
NARRATOR: But they don’t quite have
the place to themselves.
423
00:41:22,021 --> 00:41:25,357
Mama bear and her two cubs
have made it down from the mountains.
424
00:41:26,192 --> 00:41:27,568
(CUBS GRUNTING)
425
00:41:34,074 --> 00:41:35,826
(CUBS GROWLING, GRUNTING)
426
00:41:37,786 --> 00:41:40,748
NARRATOR: She’s done well
to keep both cubs alive.
427
00:41:40,956 --> 00:41:44,335
Up to 40 percent don’t make it
through their first year.
428
00:41:49,340 --> 00:41:51,717
-She’s exhausted though.
-(BEAR GRUNTS)
429
00:41:52,885 --> 00:41:56,388
NARRATOR: It’s time they learned to stand
on their own four paws.
430
00:41:56,680 --> 00:41:58,557
(CUB GROANS)
431
00:42:03,562 --> 00:42:05,773
NARRATOR: Time for Fishing 101.
432
00:42:08,359 --> 00:42:10,444
Just watch me, kids.
433
00:42:12,279 --> 00:42:14,698
(WHIMSICAL MUSIC PLAYING)
434
00:42:29,547 --> 00:42:31,924
Oh! So close.
435
00:42:38,472 --> 00:42:39,515
Nope.
436
00:42:41,183 --> 00:42:43,352
Termites were way easier than this.
437
00:42:54,863 --> 00:42:58,325
(CUBS GRUMBLING, GRUNTING)
438
00:43:00,703 --> 00:43:01,829
NARRATOR: Mom's not worried.
439
00:43:01,912 --> 00:43:05,040
She knows it will soon be much easier
to catch a meal here
440
00:43:05,124 --> 00:43:06,375
because the salmon are changing.
441
00:43:09,545 --> 00:43:10,754
They’ve stopped eating,
442
00:43:12,089 --> 00:43:15,509
and all the males
have become mating machines.
443
00:43:17,511 --> 00:43:21,682
That hunched back?
It's kind of like a sockeye six-pack.
444
00:43:23,934 --> 00:43:25,311
Check it out, ladies.
445
00:43:27,021 --> 00:43:30,441
And those teeth? Mmm, irresistible.
446
00:43:35,070 --> 00:43:38,699
While the males show off,
the females are being more practical,
447
00:43:39,408 --> 00:43:42,244
looking for the best patch of riverbed
to lay eggs.
448
00:43:49,126 --> 00:43:54,506
They fight over the shallow spots
where the water’s cool and rich in oxygen.
449
00:43:56,592 --> 00:43:58,427
Then each prepares a nest,
450
00:44:00,054 --> 00:44:02,806
clearing away silt
that could suffocate her eggs.
451
00:44:12,316 --> 00:44:14,777
She lays over 4,000...
452
00:44:16,987 --> 00:44:19,198
and the male adds clouds of sperm.
453
00:44:26,705 --> 00:44:31,960
Across Alaska, millions of salmon nests
hold billions of eggs.
454
00:44:32,753 --> 00:44:35,422
(SOMBER MUSIC PLAYING)
455
00:44:43,430 --> 00:44:45,599
Exhausted and starved,
456
00:44:46,642 --> 00:44:49,228
the salmon die soon after spawning.
457
00:44:51,647 --> 00:44:54,775
But even in death, they bring life.
458
00:44:56,193 --> 00:44:59,154
The decaying bodies
merge with the riverbank.
459
00:45:00,864 --> 00:45:05,619
The biggest transfer of nutrients
from ocean to land on Earth.
460
00:45:05,786 --> 00:45:08,163
(MAJESTIC MUSIC PLAYING)
461
00:45:09,915 --> 00:45:12,584
Plant food for
the great forest of the north,
462
00:45:13,252 --> 00:45:17,673
where trees grow three times faster
along salmon-stocked rivers.
463
00:45:24,263 --> 00:45:27,433
Dead fish are an easy meal
for patient cubs.
464
00:45:33,689 --> 00:45:35,983
These two will fatten up quickly now,
465
00:45:37,735 --> 00:45:40,738
just in time to climb the mountain
back to their den.
466
00:45:46,827 --> 00:45:51,415
Winter will come again, hard.
But they’ll be ready.
467
00:45:53,250 --> 00:45:57,588
The snow, though fierce,
will be the lifeblood of next summer,
468
00:45:58,630 --> 00:46:03,218
allowing life to thrive
across the northlands of America.
469
00:46:32,247 --> 00:46:33,499
(MUSIC CONCLUDES)
34801
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