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♪♪

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NARRATOR:
The oceans are full of wonder...

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an alien world,
waiting to be explored...

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...a place of extraordinary
life-forms...

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with intriguing social lives...

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and incredible intelligence.

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To reveal their secrets,
a hidden team goes undercover.

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Spy Creatures.

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♪♪

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The most innovative undersea
robots in the world.

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♪♪

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They not only look like
the animals they film,

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they interact with them
as no human can.

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♪♪

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Equipped with hidden cameras...

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♪♪

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...they reveal
their astonishing lives.

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As our Spies join
their undersea world...

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they shed light on some of
the mysteries of the deep.

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♪♪

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NARRATOR: The ocean is a
beautiful and mysterious place,

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but as our Spies discover,

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trouble can lie
just below the surface.

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For a humpback calf,

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the first few months of life
are the most dangerous.

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And in the seas
of French Polynesia,

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a mother with young
has a lot to worry about.

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Spy Humpback and Spy Dolphin

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are discovering
what she fears the most.

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♪♪

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To avoid drawing attention, they
communicate only in whispers.

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[ Whale song ]

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Conversations picked up
by hydrophones in our spies.

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♪♪

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Above, Spy Frigate
is also on duty.

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It's soon clear a calf
has other ways to make a noise!

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Below, his splashes travel far.

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Our spies' hydrophones
pick up another sound...

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a call not far away.

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[ Whale song ]

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Spy Dolphin investigates.

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A male humpback.

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[ Whale song ]

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He's what's known as a singer --
a male looking for a mate.

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With the singer so close,
the calf should stay silent.

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But like any youngster,
he can't keep still,

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and certainly can't keep quiet.

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Spy Dolphin is still
with the singer.

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The whale heard the leaps
and sets course

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to find where they came from.

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♪♪

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Aware of the danger,
the mother guides her calf away.

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But it's already too late.

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♪♪

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The singer circles the pair.

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♪♪

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All the calf can do
is stay close to his mother.

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But even this won't keep him
from harm.

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The male wants to mate,

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and that's where
the danger lies.

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[ Whale song ]

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She slaps him away...

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and keeps herself
between him and her calf.

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He wouldn't knowingly harm
her baby,

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but courtship can be
a rough affair.

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As things escalate,
the calf stays even closer.

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It's about to get worse.

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Other males are arriving.

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They heard the singer's song,
now they've heard the commotion.

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The calf is in grave danger

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and there's little
his mother can do.

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♪♪

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As the whales circle,
there's no escape.

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But the newcomers are now
the singer's rivals.

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His warning -- a bubble blast.

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But they aren't
scared off easily.

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A second warning
from the singer.

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A dangerous moment.

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Things could
spiral out of control.

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♪♪

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The mother pushes her calf
to the surface,

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protecting him as best she can.

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The singer issues his third
and final warning.

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He's bigger than any of them,
and ready to fight.

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♪♪

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The threat's enough to drive
the males away.

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♪♪

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The calf is now safe
to swim on his own.

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♪♪

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The singer's behavior
seems to have changed.

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With his rivals gone, he now
keeps a respectful distance.

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Accepted by the mother,
he'll stay by their side

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and protect them from danger.

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[ Whale song ]

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In return, one day, he should
win the mother's affections.

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♪♪

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Until then,
he'll be their escort.

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♪♪

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[ Birds squawking ]

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On this remote island
in the South Atlantic,

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there's trouble on the beaches.

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Each year, South Georgia
is invaded by elephant seals.

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They are the heavyweights
of the seal world.

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For a pup, it's a tough place
to be born.

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Fighting is all around.

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The pup is blissfully unaware
of the risks he's facing.

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It takes a battle-hardened spy
to survive here.

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BoulderCam --
a souped-up version

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of the first spycam ever made.

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[ Grunting ]

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Its rock-hard exterior offers
some protection

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from these mountains of blubber.

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The pup's only defense
is his mother.

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But despite the current calm,

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she can't stop danger
coming to them.

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The beachmaster.

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The largest seal in the colony
and the father of the pups.

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Weighing nearly four tons,

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he's 10 times heavier
than the females...

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[ Pup squeaks ]

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...and doesn't know
his own weight!

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He has plenty else
to worry about.

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Such as a male cavorting
with one of his females.

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Not the wisest move.

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An outrage
for the beachmaster.

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A danger for the pup.

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[ Pup shrieking ]

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He has nowhere to hide.

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♪♪

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When eight tons collide,

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the risk is for those
who are in the way.

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This time, it's an easy win
for the beachmaster.

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But this clash of the titans

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separated
the pup from his mother.

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If he doesn't find her soon,
he won't survive.

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Approach the wrong mother,
and you'll learn the hard way.

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[ Pup shrieks ]

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But he still tries each in turn.

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♪♪

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Just when it seems things
couldn't get any worse,

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a skua arrives.

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♪♪

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But this pup is a fighter...

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and won't give up.

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♪♪

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Then, a familiar figure.

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The beachmaster,
fresh from battle.

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Approaching him could be
a big mistake.

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♪♪

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But the beachmaster
has a more sensitive side.

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♪♪

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A father and son moment.

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♪♪

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He may be welcoming,

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but beachmasters have
other priorities.

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Like snoozing.

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[ Squeaking ]

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But where is his mother?

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She's been close by all along.

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[ Mother grunting ]

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[ Squeaking ]

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They're together again.

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♪♪

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A tender moment
in an inhospitable land.

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In a colony,
harmony is briefly restored.

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Wherever
serenity seems to reign,

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trouble is rarely far away.

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And finding food
is often at the heart of it

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To find a creature
with a killer solution,

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Spy Crab embarks
on a dangerous mission.

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It's after a creature
with a fearsome reputation.

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♪♪

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Plumes of sand are the giveaway.

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Spy Crab risks all by
taking a closer look.

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♪♪

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It's wise to be cautious.

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For this creature in hiding
has deadly powers.

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It's a peacock mantis shrimp.

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Despite its size,
it packs a killer punch.

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This was just a warning.

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Better stay back.

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Fortunately, the mantis
has a job to do.

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A bit of housekeeping.

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His next task is to find food.

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While he's away, his lifelong
partner guards the nest.

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She's carrying their eggs.

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So it's up to her mate
to bring home a meal.

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♪♪

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Spy Crab will join him
to find out how he catches it.

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The mantis hunts
with cunning and initiative.

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He uses the coral as cover
to stage an ambush.

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♪♪

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He's helped by the most
complex eyes of any creature.

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They see colors invisible
to most other life.

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They even move independently,
useful for targeting prey.

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He aims to take it by surprise.

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Our spy moves in
for a closer angle.

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♪♪

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This is the moment.

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He strikes!

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The most powerful punch
in the world.

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Faster than a bullet from a gun.

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A force 1,700 times
his weight.

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Even the locals seem impressed.

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With his victim out cold,
he carries it home.

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♪♪

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Spy Crab dares to move closer.

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00:17:48,566 --> 00:17:52,266
It's a meal that will last
the couple for days.

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♪♪

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After a bit of dismantling,
shell fragments are discarded.

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♪♪

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It's tempting to move
closer still.

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00:18:20,933 --> 00:18:23,200
But is this wise?

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♪♪

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00:18:29,233 --> 00:18:32,433
Our Spy is a crab after all.

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♪♪

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[ Glass shatters ]

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You can't say it wasn't warned.

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For ingenious ways
of catching prey,

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few can beat
a mantis shrimp.

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00:19:03,466 --> 00:19:07,266
But even the greatest hunters
can find themselves in trouble.

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00:19:09,300 --> 00:19:13,400
This Galapagos sea lion has
the odds stacked against him.

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00:19:15,333 --> 00:19:19,466
The rest of his hunting team had
been killed by a pod of orcas.

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00:19:21,533 --> 00:19:25,700
Not only that, in the fighting,
he lost an eye.

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00:19:27,766 --> 00:19:32,666
But every day,
he still needs to eat.

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To see the challenges he faces,

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Spy Frigate is deployed
once more.

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00:19:38,600 --> 00:19:41,700
Spy Sea Lion captures
the view from below.

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00:19:43,733 --> 00:19:48,200
Despite his problems,
the sea lion is fit and healthy.

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00:19:55,133 --> 00:19:58,766
But he's after one of the most
challenging fish of all.

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A tuna.

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00:20:03,766 --> 00:20:07,233
To hunt it alone
is almost impossible.

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00:20:09,300 --> 00:20:12,333
Our spies will see how he fares.

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00:20:16,700 --> 00:20:20,266
Without his team behind him,
it's all up to him,

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00:20:20,266 --> 00:20:23,066
with our spy just an observer.

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00:20:25,300 --> 00:20:29,200
His best hope is to trap
it against the rocks.

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00:20:36,000 --> 00:20:41,066
But as soon as it's cornered,
it finds a way out.

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The chase goes on.

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Again he has it trapped.

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♪♪

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00:20:55,966 --> 00:20:59,133
The sea lion cuts
off the tuna's escape.

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00:21:03,100 --> 00:21:05,766
Spy Sea Lion picks up the chase.

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♪♪

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00:21:11,933 --> 00:21:14,000
Once more, it's cornered.

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♪♪

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00:21:19,700 --> 00:21:22,333
Once more, it escapes.

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♪♪

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00:21:27,166 --> 00:21:32,800
It's now a test of endurance,
and the sea lion is tiring.

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00:21:32,800 --> 00:21:35,766
But it's not his only problem.

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A Galapagos shark.

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And not just one.

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They aim to steal his catch.

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00:21:48,933 --> 00:21:53,166
He drives them away
and is back in pursuit.

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♪♪

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00:22:15,400 --> 00:22:18,366
Close, but not close enough.

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♪♪

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00:22:24,066 --> 00:22:26,400
Then he has it!

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♪♪

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00:22:31,866 --> 00:22:34,066
And drags it to the shallows.

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00:22:36,933 --> 00:22:40,733
But it's not over.

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It's what the sharks
were waiting for.

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♪♪

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00:22:50,700 --> 00:22:53,366
The sea lion is outnumbered.

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00:22:55,100 --> 00:22:57,300
They steal his tuna away.

265
00:23:00,233 --> 00:23:02,766
But the sea lion won't give up.

266
00:23:05,866 --> 00:23:07,666
He steals it back.

267
00:23:11,966 --> 00:23:14,400
And takes what's left
to the rocks.

268
00:23:15,933 --> 00:23:17,633
[ Barking ]

269
00:23:17,633 --> 00:23:21,333
With the tuna out of reach,
the sharks retreat.

270
00:23:23,566 --> 00:23:29,633
His sheer tenacity
made the impossible possible.

271
00:23:29,633 --> 00:23:33,933
Tomorrow he'll have to do it
all over again.

272
00:23:39,700 --> 00:23:41,700
If you're looking for trouble,

273
00:23:41,700 --> 00:23:45,133
the coast of California
is the place to be.

274
00:23:50,600 --> 00:23:54,666
Here lives
the sarcastic fringehead.

275
00:23:54,666 --> 00:23:56,833
Better known for its aggression,

276
00:23:56,833 --> 00:23:59,266
rather than
it's sarcastic nature.

277
00:23:59,266 --> 00:24:05,466
♪♪

278
00:24:05,466 --> 00:24:10,266
But he does use his mouth
as a weapon.

279
00:24:10,266 --> 00:24:12,166
A way to guard his home.

280
00:24:12,166 --> 00:24:23,466
♪♪

281
00:24:23,466 --> 00:24:26,866
A new spy is up for
the challenge.

282
00:24:31,300 --> 00:24:35,033
It's subject of interest
is close by.

283
00:24:41,833 --> 00:24:46,733
As our spy approaches,
it films his threat display.

284
00:24:51,300 --> 00:24:54,200
This is what a rival sees.

285
00:24:59,066 --> 00:25:02,233
Our spy's no match
for the real thing.

286
00:25:07,933 --> 00:25:11,333
Another fringehead
is seeking a new home.

287
00:25:13,833 --> 00:25:18,266
But this one is considerably
smaller than our spy.

288
00:25:20,233 --> 00:25:22,500
He soon has second thoughts.

289
00:25:22,500 --> 00:25:26,700
♪♪

290
00:25:26,700 --> 00:25:28,966
He tries the neighbor instead.

291
00:25:28,966 --> 00:25:38,700
♪♪

292
00:25:38,700 --> 00:25:41,933
Again, they use their mouths
as a threat.

293
00:25:45,333 --> 00:25:49,866
The neighbor's gape is
far bigger than his rival.

294
00:25:49,866 --> 00:25:52,300
And he's ready to fight
for his home.

295
00:25:52,300 --> 00:26:16,166
♪♪

296
00:26:16,166 --> 00:26:18,566
He chases off the competition.

297
00:26:22,933 --> 00:26:26,933
And returns to his burrow.

298
00:26:26,933 --> 00:26:29,200
Safe once more.

299
00:26:33,566 --> 00:26:36,166
The loser is still searching.

300
00:26:38,333 --> 00:26:40,500
He finds a vacant home.

301
00:26:40,500 --> 00:26:46,533
♪♪

302
00:26:46,533 --> 00:26:48,700
Or so he thought.

303
00:26:51,133 --> 00:26:54,766
An octopus was already
in residence.

304
00:26:59,766 --> 00:27:03,566
Eviction over,
he finally moves in.

305
00:27:07,100 --> 00:27:09,200
Returning to the neighbor,

306
00:27:09,200 --> 00:27:12,700
our spy discovers
why he's so defensive.

307
00:27:14,966 --> 00:27:18,500
He's guarding eggs
his mate has laid.

308
00:27:21,966 --> 00:27:25,433
Fanning them keeps them
well oxygenated.

309
00:27:29,566 --> 00:27:33,100
Spy Fringehead will
leave him to it.

310
00:27:41,300 --> 00:27:44,066
Life on the beach isn't always
the paradise

311
00:27:44,066 --> 00:27:45,933
it's cracked up to be.

312
00:27:48,700 --> 00:27:52,000
When hermit crabs
gather to swap their shells,

313
00:27:52,000 --> 00:27:56,200
things can go very wrong
very quickly.

314
00:27:56,200 --> 00:27:59,300
Spy Hermit Crab is back
to find out the trouble

315
00:27:59,300 --> 00:28:02,900
they sometimes get into.

316
00:28:02,900 --> 00:28:06,300
When things go to plan,
they line up in order of size

317
00:28:06,300 --> 00:28:09,100
and the swap begins.

318
00:28:09,100 --> 00:28:14,833
But leaving one shell
and entering the next is tricky.

319
00:28:14,833 --> 00:28:19,766
This crab has missed
the new shell completely.

320
00:28:19,766 --> 00:28:24,200
And someone's taken the one
he was after.

321
00:28:24,200 --> 00:28:26,133
She won't be giving it back!

322
00:28:29,033 --> 00:28:33,966
Left naked and exposed,
he's in serious danger.

323
00:28:39,366 --> 00:28:44,700
At the worst possible time,
a ruddy turnstone arrives.

324
00:28:48,366 --> 00:28:53,100
An unfortunate name, and no fun
for the hermit crabs either.

325
00:28:58,866 --> 00:29:03,000
Their best defense
is to hide in their shells.

326
00:29:03,233 --> 00:29:05,500
♪♪

327
00:29:09,166 --> 00:29:12,766
An option not available
to the naked crab.

328
00:29:16,300 --> 00:29:20,166
For the rest,
it's everyone for themselves.

329
00:29:20,166 --> 00:29:31,933
♪♪

330
00:29:31,933 --> 00:29:34,266
Fortunately for the naked crab,

331
00:29:34,266 --> 00:29:37,966
the turnstones are still focused
on the gathering.

332
00:29:37,966 --> 00:29:44,966
♪♪

333
00:29:44,966 --> 00:29:49,433
But these crabs have all
the protection they need.

334
00:29:49,433 --> 00:29:52,966
It's those that don't who
are in trouble.

335
00:29:52,966 --> 00:30:00,500
♪♪

336
00:30:00,500 --> 00:30:04,266
The naked crab must think
on his feet.

337
00:30:04,266 --> 00:30:10,933
♪♪

338
00:30:10,933 --> 00:30:14,800
His solution
is certainly innovative.

339
00:30:18,200 --> 00:30:21,566
He's found the cap
of a sunscreen bottle.

340
00:30:24,366 --> 00:30:26,733
It's not the perfect solution.

341
00:30:28,733 --> 00:30:33,866
It isn't a good fit and will act
like a greenhouse in the sun.

342
00:30:33,866 --> 00:30:40,833
♪♪

343
00:30:40,833 --> 00:30:44,533
What he really needs
is in short supply.

344
00:30:44,533 --> 00:30:51,366
♪♪

345
00:30:51,366 --> 00:30:53,733
Could he be in luck?

346
00:30:53,733 --> 00:30:57,633
He's happened
on another shell exchange...

347
00:30:57,633 --> 00:30:59,466
and takes his place in line.

348
00:31:02,366 --> 00:31:05,133
Or, rather, tries to jump it!

349
00:31:07,700 --> 00:31:10,766
And comes away with nothing.

350
00:31:10,766 --> 00:31:12,933
But what's this?

351
00:31:12,933 --> 00:31:15,733
A shell far from the crowd,

352
00:31:15,733 --> 00:31:18,366
with just
Spy Hermit Crab on guard?

353
00:31:22,333 --> 00:31:25,566
Has he found himself a home?

354
00:31:25,566 --> 00:31:34,366
♪♪

355
00:31:34,366 --> 00:31:37,333
It's an easy fit.

356
00:31:37,333 --> 00:31:40,500
Now he has the protection
he needs.

357
00:31:40,500 --> 00:31:44,366
The ruddy turnstones
must look elsewhere.

358
00:31:48,500 --> 00:31:52,266
While hermit crabs must fend
for themselves,

359
00:31:52,266 --> 00:31:55,700
others face trouble together.

360
00:31:55,700 --> 00:31:59,000
Swathes of kelp and sea grass
draw visitors

361
00:31:59,000 --> 00:32:01,366
to the Pacific Northwest.

362
00:32:05,000 --> 00:32:08,366
Pacific herring
come here to spawn.

363
00:32:12,266 --> 00:32:15,766
They arrive in
astonishing numbers.

364
00:32:20,733 --> 00:32:27,533
Spy Bald Eagle captures
the true scale of the spectacle.

365
00:32:27,533 --> 00:32:30,733
They are here in the millions.

366
00:32:30,733 --> 00:32:36,366
♪♪

367
00:32:36,366 --> 00:32:40,700
Joining them is another
spy creature.

368
00:32:40,700 --> 00:32:43,933
With its fishlike movement
and onboard camera,

369
00:32:43,933 --> 00:32:46,433
it homes in on the shoals.

370
00:32:46,433 --> 00:32:55,200
♪♪

371
00:32:55,200 --> 00:32:59,766
As Spy Herring nears,
it detects a strange sound...

372
00:32:59,766 --> 00:33:01,700
[ Clicking ]

373
00:33:01,700 --> 00:33:04,133
...and slips into the shoal
unnoticed.

374
00:33:04,133 --> 00:33:11,300
♪♪

375
00:33:11,300 --> 00:33:14,600
The clicking is made
by the herring.

376
00:33:14,600 --> 00:33:19,533
♪♪

377
00:33:19,533 --> 00:33:23,266
As the shoals build,
so do the clicks.

378
00:33:23,266 --> 00:33:32,800
♪♪

379
00:33:32,800 --> 00:33:36,866
They're from bubbles squeezed
from their swim bladders.

380
00:33:41,566 --> 00:33:46,100
The bubbles are thought to guide
others following in their wake.

381
00:33:46,100 --> 00:33:49,866
The most experienced herring
lead the way.

382
00:33:53,466 --> 00:33:57,600
The commotion soon
attracts predators.

383
00:33:57,600 --> 00:34:03,900
♪♪

384
00:34:03,900 --> 00:34:08,133
Sea lions herd the herring
towards the shore.

385
00:34:08,133 --> 00:34:11,833
Spy Bald Eagle shows
their technique in action.

386
00:34:11,833 --> 00:34:16,800
♪♪

387
00:34:16,800 --> 00:34:19,000
They trap them in the shallows,

388
00:34:19,000 --> 00:34:21,166
where they're easier
to pick off.

389
00:34:24,900 --> 00:34:28,633
The survivors head for the kelp.

390
00:34:28,633 --> 00:34:30,900
Here, they'll lay their eggs.

391
00:34:33,433 --> 00:34:38,700
Soon, the kelp
is completely covered.

392
00:34:38,700 --> 00:34:42,400
They race to finish laying
before the sea lions take them.

393
00:34:42,400 --> 00:34:55,300
♪♪

394
00:34:55,300 --> 00:34:57,700
There's more trouble ahead.

395
00:34:57,700 --> 00:35:00,066
[ Birds squawking ]

396
00:35:00,066 --> 00:35:05,733
♪♪

397
00:35:05,733 --> 00:35:11,666
Surf scoters time their arrival
to feed on the eggs.

398
00:35:11,666 --> 00:35:15,966
The ducks can dive 60 feet,
as they take what they can.

399
00:35:15,966 --> 00:35:25,200
♪♪

400
00:35:25,200 --> 00:35:29,866
One million eggs smother
every square foot.

401
00:35:29,866 --> 00:35:32,633
Enough for billions
upon billions

402
00:35:32,633 --> 00:35:35,500
to survive the onslaught.

403
00:35:35,500 --> 00:35:44,466
♪♪

404
00:35:44,466 --> 00:35:47,833
Having also run the gauntlet
of the sea lions,

405
00:35:47,833 --> 00:35:49,966
the males take over.

406
00:35:52,833 --> 00:35:58,500
As they fertilize the eggs,
their milt clouds the bay.

407
00:35:58,500 --> 00:36:02,066
Spy Herring is vanishing
from view.

408
00:36:02,066 --> 00:36:13,066
♪♪

409
00:36:13,066 --> 00:36:17,600
Above, a clear
and beautiful scene.

410
00:36:20,633 --> 00:36:25,866
The sea turned turquoise
by the spawning males.

411
00:36:25,866 --> 00:36:31,200
♪♪

412
00:36:31,200 --> 00:36:34,466
While herring confront danger
with sheer numbers,

413
00:36:34,466 --> 00:36:39,400
cuttlefish rely on subterfuge.

414
00:36:39,400 --> 00:36:43,400
They need to -- they spend
their lives under fire.

415
00:36:46,200 --> 00:36:50,066
But they are experts
at disguise.

416
00:36:54,800 --> 00:36:58,966
For Spy Cuttlefish,
a new investigation.

417
00:36:58,966 --> 00:37:03,733
♪♪

418
00:37:03,733 --> 00:37:06,933
As well as creating patterns
to communicate,

419
00:37:06,933 --> 00:37:09,433
they use them
for camouflage, too.

420
00:37:11,933 --> 00:37:13,966
Just as well...

421
00:37:13,966 --> 00:37:18,466
New Zealand fur seals
are an ever-present danger.

422
00:37:21,766 --> 00:37:26,300
As they go on the hunt,
Spy Seal is among them.

423
00:37:26,300 --> 00:37:33,700
♪♪

424
00:37:33,700 --> 00:37:37,000
But cuttlefish have some tricks
to play.

425
00:37:37,000 --> 00:37:46,766
♪♪

426
00:37:46,766 --> 00:37:51,933
Under the skin, muscles contract
and cause it to rise.

427
00:37:51,933 --> 00:37:54,700
These papillae break up
their outline.

428
00:37:57,166 --> 00:38:01,233
Add some color affects,
and he soon blends in.

429
00:38:03,900 --> 00:38:06,266
Enough to fool the fur seal.

430
00:38:08,900 --> 00:38:12,866
It's a truly life-saving
transformation.

431
00:38:17,000 --> 00:38:19,366
All our spy can do is hide...

432
00:38:21,033 --> 00:38:25,666
...while cuttlefish vanish
before its camera eyes.

433
00:38:28,866 --> 00:38:32,866
But it only works for those
who see the seal coming.

434
00:38:32,866 --> 00:38:41,100
♪♪

435
00:38:41,100 --> 00:38:43,466
He spots it too late.

436
00:38:45,566 --> 00:38:49,566
The seal doesn't hesitate.

437
00:38:49,566 --> 00:38:55,600
All the cuttlefish can do
is release an inky smokescreen.

438
00:38:55,600 --> 00:38:59,733
The seal tries to stun him.

439
00:38:59,733 --> 00:39:02,933
But he has another
secret weapon.

440
00:39:02,933 --> 00:39:04,866
Jet propulsion.

441
00:39:07,200 --> 00:39:09,966
Then hide among the inky clouds.

442
00:39:09,966 --> 00:39:15,300
♪♪

443
00:39:15,300 --> 00:39:18,600
But it's not over.

444
00:39:18,600 --> 00:39:21,300
He's grabbed again.

445
00:39:21,300 --> 00:39:23,266
More ink clouds.

446
00:39:25,966 --> 00:39:27,833
More battering.

447
00:39:27,833 --> 00:39:36,166
♪♪

448
00:39:36,166 --> 00:39:39,666
This time, the ink cloud worked.

449
00:39:42,666 --> 00:39:47,133
Then, amazingly, he morphs
into the surrounding seaweed.

450
00:39:47,133 --> 00:39:53,866
♪♪

451
00:39:53,866 --> 00:39:57,466
To the seal,
he's totally vanished.

452
00:40:03,933 --> 00:40:06,766
Today, on the shores of Mexico,

453
00:40:06,766 --> 00:40:10,266
there's no refuge
from predators.

454
00:40:10,266 --> 00:40:14,633
To find out more, there's a spy
that fits in with the locals.

455
00:40:23,433 --> 00:40:26,533
The crabs
are a pugnacious bunch.

456
00:40:28,633 --> 00:40:33,866
Despite the size difference,
they stand up to our spy.

457
00:40:33,866 --> 00:40:36,200
It's the highest tide
of the month,

458
00:40:36,200 --> 00:40:39,733
and the tide is turning.

459
00:40:39,733 --> 00:40:45,166
Our spy is about to witness
an extraordinary event.

460
00:40:45,166 --> 00:40:48,166
The first arrivals
are already here.

461
00:40:48,166 --> 00:40:53,200
♪♪

462
00:40:53,200 --> 00:40:57,633
They're the front-runners
of what will become an invasion.

463
00:41:00,166 --> 00:41:02,666
Our crab is not filming alone.

464
00:41:04,833 --> 00:41:10,300
Spy Pelican is already
capturing what's happening.

465
00:41:10,300 --> 00:41:12,266
These are grunion,

466
00:41:12,266 --> 00:41:15,300
fish with an extraordinary way
of spawning.

467
00:41:15,300 --> 00:41:21,933
♪♪

468
00:41:21,933 --> 00:41:26,166
It's a race against the tide,

469
00:41:26,166 --> 00:41:29,400
for grunion lay their eggs
on the high tide line.

470
00:41:31,833 --> 00:41:35,100
Just once a month
does it reach this far.

471
00:41:36,933 --> 00:41:38,700
By laying in the sand,

472
00:41:38,700 --> 00:41:42,100
their eggs are safe
from predators in the sea.

473
00:41:42,100 --> 00:41:52,100
♪♪

474
00:41:52,100 --> 00:41:56,400
The females use their tails
to drill deep.

475
00:41:58,766 --> 00:42:01,433
The males coil around them,

476
00:42:01,433 --> 00:42:04,066
fertilizing the eggs
as they're laid.

477
00:42:06,866 --> 00:42:08,600
By spawning all together,

478
00:42:08,600 --> 00:42:12,700
each reduces
its chances of being eaten.

479
00:42:12,700 --> 00:42:16,700
Spy Pelican has already
been joined

480
00:42:16,700 --> 00:42:20,366
by a hungry flock.

481
00:42:20,366 --> 00:42:23,400
It's now part
of a fishing party...

482
00:42:27,000 --> 00:42:30,033
...one that's growing in size...

483
00:42:33,533 --> 00:42:37,400
...just as spawning
reaches its peak.

484
00:42:40,700 --> 00:42:45,333
The grunion must lay their eggs
before the tide turns.

485
00:42:45,333 --> 00:42:49,533
But time is running out,
and they've nowhere to hide.

486
00:42:49,533 --> 00:42:55,666
♪♪

487
00:42:55,666 --> 00:43:00,666
For the pelicans,
it's an all-you-can-eat buffet.

488
00:43:00,666 --> 00:43:02,600
At least it should be.

489
00:43:06,633 --> 00:43:09,700
But despite the feast laid out
before them,

490
00:43:09,700 --> 00:43:14,233
their bills
are now their handicap.

491
00:43:14,233 --> 00:43:16,533
It wasn't designed for this.

492
00:43:18,900 --> 00:43:21,566
What scoops up shoals
in the sea

493
00:43:21,566 --> 00:43:25,533
is useless on the sand.

494
00:43:25,533 --> 00:43:30,500
But as the tide retreats,
so do the grunion.

495
00:43:30,500 --> 00:43:33,700
This is what the pelicans
were waiting for.

496
00:43:33,700 --> 00:43:39,733
♪♪

497
00:43:39,733 --> 00:43:43,633
In deeper water,
the fish are easy game.

498
00:43:46,633 --> 00:43:49,500
The onslaught begins.

499
00:43:49,500 --> 00:44:07,166
♪♪

500
00:44:07,166 --> 00:44:11,500
Then, on its own accord,
Spy Pelican takes a dive.

501
00:44:11,500 --> 00:44:17,866
♪♪

502
00:44:17,866 --> 00:44:20,966
A catastrophic malfunction.

503
00:44:31,733 --> 00:44:36,133
Our crab is now
the last spy standing.

504
00:44:36,133 --> 00:44:39,466
It captures the last grunion
returning to the sea,

505
00:44:39,466 --> 00:44:44,333
having left their legacy
in the sand.

506
00:44:44,333 --> 00:44:48,500
The eggs they leave will hatch
on the next high tide.

507
00:44:51,100 --> 00:44:55,633
As the tide retreats,
it gives back what it's taken.

508
00:44:55,633 --> 00:44:59,866
Our spies' mission is over.

509
00:45:02,100 --> 00:45:05,400
It looks like
it's Spy Pelican's last.

510
00:45:11,533 --> 00:45:14,566
Of all the problems
faced by ocean life,

511
00:45:14,566 --> 00:45:17,866
few are as unpredictable
as the weather.

512
00:45:20,133 --> 00:45:26,166
For marine iguanas,
it's a test of survival.

513
00:45:26,166 --> 00:45:30,633
Whatever the weather, they must
face the waves to feed.

514
00:45:39,200 --> 00:45:42,066
Spy Iguana will attempt
to join them,

515
00:45:42,066 --> 00:45:44,900
despite
the worsening conditions.

516
00:45:57,866 --> 00:45:59,466
It won't be easy.

517
00:45:59,466 --> 00:46:02,033
Even the fish are in trouble.

518
00:46:09,200 --> 00:46:14,133
It's even harder
for the iguanas.

519
00:46:14,133 --> 00:46:18,966
They must somehow feed
without being washed away.

520
00:46:18,966 --> 00:46:23,166
Our spy also needs
a foothold fast.

521
00:46:37,933 --> 00:46:42,700
Secure for a moment, it can see
how the iguanas are coping.

522
00:46:46,800 --> 00:46:51,600
Their claws act like crampons,
but they can only do so much.

523
00:46:51,600 --> 00:46:56,866
They must eat as fast
as they can, while they can.

524
00:46:56,866 --> 00:47:09,000
♪♪

525
00:47:09,000 --> 00:47:11,466
Even a turtle is struggling.

526
00:47:11,466 --> 00:47:17,300
♪♪

527
00:47:17,300 --> 00:47:21,300
One by one,
the iguanas yield to the swell.

528
00:47:21,300 --> 00:47:47,366
♪♪

529
00:47:47,366 --> 00:47:50,833
Those that give up the fight
head to the surface.

530
00:47:50,833 --> 00:47:55,900
♪♪

531
00:47:55,900 --> 00:47:59,600
Our spy hangs on
with the still undaunted.

532
00:47:59,600 --> 00:48:04,300
♪♪

533
00:48:04,300 --> 00:48:08,266
In the end,
it's not up to our spy.

534
00:48:08,266 --> 00:48:10,933
The swell has the last word.

535
00:48:12,933 --> 00:48:17,533
As with all our spies,
it keeps filming to the end.

536
00:48:25,866 --> 00:48:30,833
In Indonesia, others, too, will
soon be weathering the storms.

537
00:48:33,733 --> 00:48:37,100
Spy Octopus discovers
what happens

538
00:48:37,100 --> 00:48:39,733
when things take a turn
for the worse.

539
00:48:39,733 --> 00:48:44,800
♪♪

540
00:48:44,800 --> 00:48:49,766
In calm conditions, the reef
is a place for relaxation,

541
00:48:49,766 --> 00:48:53,500
and green turtles certainly know
how to chill out.

542
00:48:55,666 --> 00:49:00,600
Even Spy Octopus
hardly creates a stir.

543
00:49:00,600 --> 00:49:04,833
But conditions are changing...

544
00:49:04,833 --> 00:49:08,133
and the swell is building.

545
00:49:08,133 --> 00:49:13,166
♪♪

546
00:49:13,166 --> 00:49:16,066
Our spy braves the growing storm

547
00:49:16,066 --> 00:49:20,833
to track down
the coconut octopus again.

548
00:49:20,833 --> 00:49:23,833
He's already in
a spot of trouble.

549
00:49:26,400 --> 00:49:31,533
Being small, he can easily
be swept away.

550
00:49:31,533 --> 00:49:34,066
He must find refuge fast.

551
00:49:36,400 --> 00:49:41,300
The octopus
finds cover of sorts.

552
00:49:41,300 --> 00:49:43,200
He can't be choosy.

553
00:49:43,200 --> 00:49:46,166
A discarded
grain sack will have to do.

554
00:49:49,933 --> 00:49:52,533
But was this the right decision?

555
00:49:52,533 --> 00:50:02,200
♪♪

556
00:50:02,200 --> 00:50:03,833
Perhaps not.

557
00:50:03,833 --> 00:50:18,266
♪♪

558
00:50:18,266 --> 00:50:20,700
He tries to hold it down...

559
00:50:20,700 --> 00:50:27,900
♪♪

560
00:50:27,900 --> 00:50:30,400
...but it's a losing battle.

561
00:50:30,400 --> 00:50:36,033
♪♪

562
00:50:36,033 --> 00:50:39,666
Spy Octopus is faring
even worse.

563
00:50:42,700 --> 00:50:45,733
The octopus
needs an alternative.

564
00:50:45,733 --> 00:50:51,566
♪♪

565
00:50:51,566 --> 00:50:55,466
What better than the shelter
that gives him his name?

566
00:50:57,500 --> 00:51:02,100
A coconut shell
for a coconut octopus.

567
00:51:02,100 --> 00:51:04,500
Something that
will weigh him down.

568
00:51:07,433 --> 00:51:10,433
But our spy is still in trouble.

569
00:51:13,466 --> 00:51:16,500
What it needs is a helping hand.

570
00:51:16,500 --> 00:51:25,566
♪♪

571
00:51:25,566 --> 00:51:28,033
Or an arm, to be precise.

572
00:51:28,033 --> 00:51:41,166
♪♪

573
00:51:41,166 --> 00:51:44,633
A perfect way to end
their partnership.

574
00:51:44,633 --> 00:51:54,100
♪♪

575
00:51:54,100 --> 00:51:59,633
On all their journeys, our spies
found many ocean wonders.

576
00:51:59,633 --> 00:52:02,533
They found emotions...

577
00:52:02,533 --> 00:52:05,033
[ Whale song ]

578
00:52:05,033 --> 00:52:07,400
[ Barks ]

579
00:52:07,400 --> 00:52:11,200
...and intelligence, too.

580
00:52:11,200 --> 00:52:14,400
There is friendship

581
00:52:14,400 --> 00:52:17,700
and danger...

582
00:52:17,700 --> 00:52:21,500
but there's still so much more
to explore.

583
00:52:21,500 --> 00:52:23,166
♪♪

584
00:52:25,866 --> 00:53:06,900
♪♪

585
00:53:06,900 --> 00:53:10,466
To learn more about what you've
seen on this "Nature" program,

586
00:53:10,466 --> 00:53:13,100
visit pbs.org.

587
00:53:13,100 --> 00:53:24,500
♪♪