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Dolphins. The cleverest creatures in the ocean.
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They may seem familiar,
but their undersea lives are a mystery.
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Spy creatures explore their hidden world...
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..discovering amazing abilities...
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..and strange gatherings.
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Revealing their intimate relationships...
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as well as their conflicts.
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Discover the intelligence
of these fun-loving creatures...
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...and enter their lives as never before.
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In the sea off Mozambique is a secret world.
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It's home to the bottlenose dolphin,
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the most widespread
and best-known dolphin in the world.
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00:01:12,280 --> 00:01:17,239
Despite their familiarity
their life below the waves is steeped in mystery.
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But all this is about to change.
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For here,
even a giant clam is not quite as it seems.
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And these super smart dolphins
are suitably intrigued.
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They know that this clam
is like none they have ever seen before.
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(Chattering)
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These are nautilus,
alien creatures from the deep abyss.
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But these are organisms of a very special kind.
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For their eyes are state-of-the-art cameras.
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Nautilus soon meets the long probing nose
that gives these dolphins their name.
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Bottlenose dolphins have excellent eyesight
but they have another way to see.
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They can beam sound waves
from their forehead.
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(Clicking)
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And use the returning echoes
to create a picture in sound.
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This sonar penetrates like an X-ray.
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(Chatters)
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There's nothing to eat in here!
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The dolphins are so completely at ease
with Spy Nautilus,
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a mother is happy to reveal
her own precious secret.
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Her newborn baby, just five days old.
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He still bears wrinkles
from his time curled up in the womb.
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His mother can stay down for 15 minutes,
but he must breathe every two.
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So, for his first few weeks of life, she makes sure
he's only a few metres from the surface.
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He has been born into an extended family
made up of aunts and other females.
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Each dolphin has its own unique
signature whistle that it uses just like a name.
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(Whistling)
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The baby will learn these whistles
and soon recognise each and every dolphin.
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00:04:20,000 --> 00:04:21,399
Pod members come and go,
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but their enduring friendships are strengthened
by touching and tickling each other.
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As well as an underwater version of cuddling.
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For mother and baby close physical contact
is an essential part of their relationship.
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For the next two years they will never be apart.
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Further along the Mozambique coast
another spy creature has appeared.
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This is Spy Turtle.
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He is keeping his beady camera eye
on another group of bottlenose -
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this time a pod of males.
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Dolphins are intrigued by this strange
but harmless turtle,
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so it can easily film them
when they come to the surface.
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It can also watch their activities
beneath the waves as well.
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No other spy creature
has such a perfect overview.
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Male dolphins live mostly bachelor lives
away from the females
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and their life is sociable and happy-go-lucky.
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Like the female pod, males come and go,
but there is always a core "band of brothers",
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who can be friends for life.
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To film their energetic and carefree lifestyle
Spy Turtle will have to shift up a gear.
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He does his best to keep up.
59
00:06:51,360 --> 00:06:53,599
But he's soon outperformed.
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All dolphins love to leap but these boy racers
love it more than most.
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The best can jump nearly six metres.
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Some can really do it in style!
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Across the world, off the coast of Central
America, lives an even more energetic dolphin.
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To film their high-speed antics,
a new and faster spy creature joins the team.
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Spy Dolphin reaches 15 miles per hour
and also has HD cameras for eyes.
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But he'll have his work cut out -
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these spinner dolphins
can easily travel 250 miles in a single day.
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And he soon discovers
just why they're called spinners.
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They are curious about Spy Dolphin.
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As they jump, they sneak a peek
at their strange travelling companion.
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To film underwater another super-fast
spy creature enters the fray.
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Spy Tuna can rapidly infiltrate these dolphins.
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And use the camera in her mouth to capture
the first ever images from inside the pod.
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She soon discovers that what Spy Dolphin saw
at the surface was just the tip of the iceberg.
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(Chattering)
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Although dolphins normally travel
in small groups,
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they sometimes come together
in spectacular numbers.
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This is a super pod - made up of
hundreds upon hundreds of dolphins.
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But it's not Spy Tuna's only revelation.
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She soon discovers just how
their extraordinary leaps are performed.
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Rapid beats of the tail provide the power.
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While twisting starts as they leave the water.
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00:10:23,880 --> 00:10:27,999
Sheer muscle
drives their spectacular aerial display.
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No other dolphin accomplishes
these astonishing corkscrews.
85
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Back in Mozambique,
the young dolphin is off on his first adventure.
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Stingrays are a common sight.
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His mother uses warning calls
to teach him to avoid the sting in their tail.
88
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But it seems this is not just a passing ray.
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Something far more mysterious is happening.
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The stingrays are gathering together.
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The dolphins join in:
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their unrivalled knowledge of ocean life tells
them that this entourage is well worth following.
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Leading them is an extremely rare, small-eyed
stingray - the biggest stingray in the ocean.
94
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Shadowing the rays are cobia fish.
95
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These renowned scavengers
confirm that a meal is on its way.
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This is the first time such an extraordinary
gathering of sea creatures has been recorded,
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but to the wordly-wise dolphins
it must be a common sight.
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It's an early lesson for the new baby,
but he'll have to hold his breath.
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He's learning that rays possess a unique skill -
one that might lead them to a meal.
100
00:12:58,000 --> 00:13:01,679
On the ray's underside
is an array of electro sensors.
101
00:13:02,560 --> 00:13:07,399
These detect the minute electrical discharges
given off by other animals,
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even those buried in the sand.
103
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When the ray senses a hidden fish
it stops and sucks it into its mouth,
104
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while all the followers can do
is scramble for scraps left behind.
105
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But dolphins are smarter.
106
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Having used the rays as guides
to the best fishing grounds,
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they then deploy their own super-senses
to find the buried treasure.
108
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Their sonar penetrates the sand
and bounces off the hidden meals.
109
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(Clicking)
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The baby has sonar too,
but he's still just trying it out.
111
00:13:56,280 --> 00:13:58,679
(Chatter and clicking)
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His mother's domed forehead,
known as the melon,
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concentrates the sound waves into a beam.
114
00:14:16,000 --> 00:14:20,039
The returning echoes reveal the shape
and type of any hidden fish.
115
00:14:24,600 --> 00:14:26,599
Some make a dash for it...
116
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..but there's always plenty more fish in the sea.
117
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(Clicking)
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She tries again.
119
00:14:36,120 --> 00:14:41,439
By increasing the speed and intensity of her
clicks, she can search deeper into the sand.
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00:14:43,160 --> 00:14:46,799
And a concentrated blast of sonar
can even stun the fish.
121
00:14:48,960 --> 00:14:50,959
(Clicking intensifies)
122
00:14:53,000 --> 00:14:54,999
Success at last!
123
00:14:58,880 --> 00:15:01,439
It's not a moment too soon for the baby dolphin.
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He's held his breath for
a record-breaking three and a half minutes!
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He now gets his own reward.
126
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The milk from his mother's watertight pouch
is six times richer than cow's milk.
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Reared on this nutritious diet,
he'll double in size in just one month.
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By shadowing his mother,
the calf learns hunting methods
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unique to catching fish in his local area.
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00:15:32,520 --> 00:15:37,399
Like so many things in a dolphin's life, the
knowledge that rays are a good guide to a meal
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00:15:37,560 --> 00:15:39,679
is handed down from mother to calf.
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And the same intelligent learning is also seen
among other dolphin pods throughout the world.
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The shallow waters of the Florida Keys create a
very different challenge for a bottlenose dolphin.
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The way they catch fish is even more inventive.
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(Whirring)
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It's a perfect mission for Spy Dolphin.
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But he won't be working alone.
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00:16:26,880 --> 00:16:31,439
Beneath the waves, a new spy creature
joins the underwater menagerie.
139
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Spy Ray:
a creature that glides along the bottom
140
00:16:59,400 --> 00:17:02,039
as it follows the dolphins across the sea grass.
141
00:17:11,040 --> 00:17:14,239
Its subjects have devised
an extraordinary hunting technique
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especially for these conditions.
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It starts when a dolphin deliberately
beats his tail to stir up a plume of mud.
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Covering the unsuspecting fish,
as well as Spy Ray.
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He soon forms a U-shaped mud plume.
146
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And then ploughs through the cloud, catching
any fish confused by the sudden blackout.
147
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He's chasing ballyhoos -
one of the fastest reacting fish in the sea.
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But the dolphin's sonar can see right through
the mud while the fish can't see her coming.
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Usually, the dolphin
wouldn't stand a chance with these fish,
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but by using his intelligence to create
a mud screen he regains the advantage.
151
00:18:38,520 --> 00:18:40,039
Further along the Keys,
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the spy creatures discover
that when dolphins cooperate to use the mud
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they can achieve even more success.
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By working as a team
they have devised a way to hunt mullet.
155
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One member of the pod
races ahead of the shoal
156
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and again beats her tail to create a mud wall.
157
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But this time she creates a complete circle,
entrapping the fish inside.
158
00:19:07,800 --> 00:19:11,239
As the mud-ring spreads,
the mullet try to escape the trap -
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leaping into the mouths of the waiting dolphins.
160
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Once all of the fish have jumped, the dolphins
start again, forming a new mud ring.
161
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The dolphins then wait for the next fish eruption.
162
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Spy Dolphin noses closer
to take up a ringside seat.
163
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The youngsters learn the art of catching
by watching the experts.
164
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These unique techniques are only known by
dolphins local to these shallow waters,
165
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and these skills are passed on
from generation to generation.
166
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When they've caught all they need
it's a chance to show-off.
167
00:21:11,240 --> 00:21:16,759
Back in Mozambique the pod of females
are skirting the coast looking for their next meal.
168
00:21:17,560 --> 00:21:22,879
This time they are after another local delicacy
that requires yet another tactic.
169
00:21:25,160 --> 00:21:27,479
Fish shoals are surprisingly noisy,
170
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and dolphins can hear the sounds they make
from ten miles away.
171
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Nautilus is among the many spy creatures
watching the dolphins' plan unfurl.
172
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(Rustling and crackling)
173
00:21:55,040 --> 00:21:59,119
The youngster is over a month old now
and can stay down for longer,
174
00:21:59,280 --> 00:22:02,119
but diving deep is always a great adventure.
175
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They are hunting huge kingfish.
176
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Some reach over a metre and weigh 15 kilos.
177
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They are far from easy to catch.
178
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The young dolphin is still only an observer,
179
00:22:21,400 --> 00:22:24,599
but this is how he learns the skills
needed later in life.
180
00:22:31,920 --> 00:22:33,599
The dolphins take their time.
181
00:22:33,760 --> 00:22:35,839
They know they can't outpace the kingfish,
182
00:22:36,000 --> 00:22:42,119
so their idea is to scan each fish with sonar
and select only the weakest, slowest individuals.
183
00:23:04,160 --> 00:23:05,919
And there it is!
184
00:23:06,080 --> 00:23:08,559
She's found her target and gives chase.
185
00:23:18,200 --> 00:23:19,839
It's a big catch.
186
00:23:20,000 --> 00:23:23,239
A nursing mother must eat 15 kilos of fish a day,
187
00:23:23,400 --> 00:23:27,119
so just one kingfish can provide
all her daily requirements.
188
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She heads back to the depths.
189
00:23:34,800 --> 00:23:37,559
And Spy Ray soon discovers the reason.
190
00:23:40,160 --> 00:23:44,079
They use the seabed
to help break the fish into smaller pieces.
191
00:23:45,800 --> 00:23:48,559
It's another new discovery for the spy creatures.
192
00:23:50,200 --> 00:23:52,519
But more revelations are in store.
193
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Killing such big fish
has unexpected consequences.
194
00:23:58,840 --> 00:24:04,319
The parasites of their prey have jumped ship
and attached themselves to the dolphins.
195
00:24:06,160 --> 00:24:10,839
Even the young dolphin has acquired an
unwelcome hitchhiker - just beneath his eye.
196
00:24:14,640 --> 00:24:19,239
It's a remora: a suckerfish
that lives by eating the dolphin's leftovers.
197
00:24:20,640 --> 00:24:23,159
They skip around like an aquatic fly.
198
00:24:25,000 --> 00:24:29,479
But they're even more irritating than a gnat,
and far harder to get rid of.
199
00:24:32,680 --> 00:24:34,799
The dolphins know a few tricks.
200
00:24:34,960 --> 00:24:38,119
Using the seabed to scrub them off
is a good start.
201
00:24:42,600 --> 00:24:44,599
The youngster has a go.
202
00:24:45,720 --> 00:24:47,719
(Whistling)
203
00:24:55,000 --> 00:24:56,639
Then tries again.
204
00:25:00,920 --> 00:25:04,559
But whatever he does,
the pesky remora stays on board.
205
00:25:12,400 --> 00:25:15,079
Even when he has to take a breath.
206
00:25:19,400 --> 00:25:21,719
He tries a different tack.
207
00:25:21,880 --> 00:25:24,399
Rubbing it against an unsuspecting dolphin.
208
00:25:26,320 --> 00:25:28,599
But has better luck with his mum.
209
00:25:30,800 --> 00:25:34,519
She accepts the unwelcome gift
as only a mother can!
210
00:25:41,160 --> 00:25:42,599
Back in the Pacific Ocean,
211
00:25:42,760 --> 00:25:46,399
the spy cameras are finding
that the spinners' extraordinary leaps
212
00:25:46,560 --> 00:25:49,239
might help them deal
with their own remora problem.
213
00:26:01,080 --> 00:26:05,959
As a spinner leaps, it's clear that she too
has a remora attached to her belly.
214
00:26:09,800 --> 00:26:14,399
By twisting violently she makes it hard
for any hangers-on to stay on board.
215
00:26:16,040 --> 00:26:19,159
Most spinning dolphins
have these unwelcome guests
216
00:26:19,320 --> 00:26:22,279
and it's likely that many are dislodged on impact.
217
00:26:29,400 --> 00:26:33,159
But they leap so persistently
there must be other reasons too.
218
00:26:37,720 --> 00:26:41,719
Possibly it's a long distance signal
that helps keep the pod together.
219
00:26:48,920 --> 00:26:53,759
But dolphins turn everything into a game
and spinning soon becomes a competition.
220
00:27:35,120 --> 00:27:37,879
Practice starts at an early age.
221
00:27:41,000 --> 00:27:42,999
A cautious start.
222
00:27:46,160 --> 00:27:49,439
Then a spectacular leap,
but without the spinning.
223
00:27:53,040 --> 00:27:55,039
Getting better.
224
00:27:57,880 --> 00:27:59,879
Better still.
225
00:28:02,200 --> 00:28:04,199
This is more like it.
226
00:28:06,480 --> 00:28:09,119
Finally, a jump to be proud of!
227
00:28:11,840 --> 00:28:13,839
It's a perfect ten.
228
00:28:25,640 --> 00:28:27,359
(Ship's horn)
229
00:28:27,520 --> 00:28:29,239
Meanwhile, in Mozambique,
230
00:28:29,400 --> 00:28:33,479
the boy racers have turned leaping
into a new and dangerous game.
231
00:28:34,040 --> 00:28:36,159
Playing chicken with a supertanker.
232
00:28:43,120 --> 00:28:47,239
The huge bow wave offers a free ride
with almost no effort at all.
233
00:28:51,040 --> 00:28:54,599
They go out of their way
to play in this man-made surf.
234
00:29:18,000 --> 00:29:20,359
But all good things must come to an end.
235
00:29:23,000 --> 00:29:28,239
As Spy Turtle discovers, this band of brothers
have plenty more ways to entertain themselves.
236
00:29:39,240 --> 00:29:43,759
Naturally, a favourite pastime
involves chasing the opposite sex.
237
00:29:50,640 --> 00:29:54,279
But their boisterous arrival
is a dangerous time for a baby.
238
00:30:05,160 --> 00:30:09,359
A gang of lusty males can kill a young calf
if he gets in their way.
239
00:30:12,000 --> 00:30:15,079
And one male gets perilously close to the baby.
240
00:30:19,640 --> 00:30:21,479
The mother shepherds him away,
241
00:30:21,640 --> 00:30:25,319
while other females
create a protective wall with their bodies.
242
00:30:28,240 --> 00:30:32,279
The rest confront the males as the baby
vanishes behind a dolphin blockade.
243
00:30:36,080 --> 00:30:39,479
Knowing he's safe,
his bodyguards return to face the males.
244
00:30:45,040 --> 00:30:47,599
Their scars are testament to previous fights.
245
00:30:50,920 --> 00:30:52,599
(Chattering)
246
00:31:00,120 --> 00:31:03,319
As always,
the spy creatures are right in the thick of it.
247
00:31:08,040 --> 00:31:11,639
They are simply spectators,
but as the females get the upper hand,
248
00:31:11,800 --> 00:31:14,799
the spy creatures become
a soft target for the males.
249
00:31:18,080 --> 00:31:20,159
They soon run rings round Spy Turtle.
250
00:31:34,080 --> 00:31:36,639
And Nautilus gets some unwelcome attention...
251
00:31:41,240 --> 00:31:43,039
(Heavy thud)
252
00:31:43,200 --> 00:31:45,039
..very unwelcome!
253
00:31:48,360 --> 00:31:49,559
(Chatters)
254
00:31:58,000 --> 00:32:03,239
But Turtle is made of sterner stuff and he keeps
filming as the males are sent packing...
255
00:32:06,160 --> 00:32:08,279
..while Nautilus is out for the count.
256
00:32:14,280 --> 00:32:18,119
Calm returns to the female pod
and the baby is safe once more.
257
00:32:26,000 --> 00:32:27,679
With Nautilus out of action,
258
00:32:27,840 --> 00:32:31,679
it's time for a new spy creature
to take on the feisty males.
259
00:32:32,840 --> 00:32:36,639
Spy Squid is perfectly suited
to explore the coral reefs.
260
00:32:40,880 --> 00:32:45,559
Like all the spy creatures, his success
relies on the dolphin's innate curiosity.
261
00:32:56,080 --> 00:32:57,599
(Squeaks)
262
00:33:04,440 --> 00:33:08,319
And like a real squid,
he creates a jet of water to get around.
263
00:33:14,360 --> 00:33:19,439
Using this jet propulsion, he explores a reef
that's a popular spot for the male dolphins.
264
00:33:24,080 --> 00:33:26,759
Why they come here
has always been a mystery.
265
00:33:34,320 --> 00:33:39,039
But the squid soon discovers that they use
the coral reef as an impromptu health spa.
266
00:33:41,000 --> 00:33:45,519
Favourite coral heads are used like pumice
stones, helping to shed off old skin.
267
00:33:49,920 --> 00:33:53,239
They visit the same chosen scrubbing sites
time and again.
268
00:34:01,720 --> 00:34:06,599
Incredibly, dolphins replace
their outer layer of skin once every three hours.
269
00:34:07,440 --> 00:34:10,839
It's vital for an animal
where streamlining is everything.
270
00:34:18,000 --> 00:34:21,479
By rubbing against the coral,
they help speed up the process.
271
00:34:31,160 --> 00:34:33,159
It's the ultimate way to exfoliate.
272
00:34:40,160 --> 00:34:43,239
After a good scrub and a scratch,
the dolphins move on.
273
00:34:46,000 --> 00:34:50,479
But Spy Squid has attracted the attention
of some less friendly reef dwellers.
274
00:34:51,760 --> 00:34:56,079
Potato cod are nearly six feet long
and weigh over 100 kilograms.
275
00:35:00,360 --> 00:35:02,679
And they eat squid for breakfast.
276
00:35:12,160 --> 00:35:14,159
Spy Squid is dicing with death.
277
00:35:25,800 --> 00:35:27,359
Time for a sharp exit.
278
00:35:39,200 --> 00:35:44,399
Meanwhile, the male dolphins have found yet
more ways of occupying their overactive minds.
279
00:35:46,360 --> 00:35:48,119
(Waves crashing)
280
00:35:49,240 --> 00:35:52,879
Africa's southern coastline
is renowned for its huge breakers.
281
00:35:53,400 --> 00:35:57,799
And whenever surf's up, it's the perfect time
for the dolphins to catch a wave.
282
00:36:02,000 --> 00:36:06,119
Being so intelligent, dolphins
like to keep themselves fully occupied.
283
00:36:09,640 --> 00:36:13,599
Unlike most animals,
much of what they do is simply for fun.
284
00:36:18,120 --> 00:36:22,679
Like experienced surfers,
the dolphins know that timing is everything.
285
00:36:36,600 --> 00:36:38,599
They turn in perfect synchrony.
286
00:37:27,280 --> 00:37:30,599
Squid finally catches up
and goes for the ride of its life.
287
00:37:47,960 --> 00:37:51,879
But even for dolphins,
the waves are sometimes just too challenging.
288
00:37:58,800 --> 00:38:01,039
And for the Squid, it's total wipe-out.
289
00:38:13,120 --> 00:38:16,999
Among the nearby female pod,
the young dolphin is now over six months old.
290
00:38:19,640 --> 00:38:24,159
He'll keep suckling until he's nearly
fully grown and ready to leave his mother.
291
00:38:26,520 --> 00:38:29,599
He's a bundle of energy
and just loves to play and leap.
292
00:38:41,840 --> 00:38:44,839
But at this age,
lessons are starting to get serious.
293
00:38:49,240 --> 00:38:53,879
One of the first was how to catch fish.
Now he must learn to do it on his own.
294
00:38:54,040 --> 00:38:58,279
He must master using his sonar
to locate food hidden in the sand.
295
00:38:58,440 --> 00:39:00,239
(Clicking)
296
00:39:05,320 --> 00:39:08,919
He's an attentive student,
mirroring his mother's every move.
297
00:39:24,560 --> 00:39:27,639
But mastering his sonar isn't exactly child's play.
298
00:39:29,080 --> 00:39:32,199
A misfire will give the game away
and scare off the fish.
299
00:39:33,480 --> 00:39:35,479
(Squeaks)
300
00:39:36,760 --> 00:39:38,199
Missed!
301
00:39:43,960 --> 00:39:47,879
Eventually, he gets the knack -
and his much deserved reward.
302
00:39:53,120 --> 00:39:55,519
He will need these skills when, at two years old,
303
00:39:55,680 --> 00:39:59,759
he will finally leave the maternal group
to set up life outside.
304
00:40:05,600 --> 00:40:09,679
Back with the spinners,
Spy Turtle joins the other spy creatures.
305
00:40:19,440 --> 00:40:21,999
As the pod passes, he's completely surrounded.
306
00:40:25,960 --> 00:40:29,039
A super pod like this
can be over half a mile long.
307
00:40:34,560 --> 00:40:35,599
Down below,
308
00:40:35,760 --> 00:40:39,759
Tuna is suffering the consequences
of being in the heart of the action.
309
00:40:44,200 --> 00:40:49,159
Dolphins consume a lot of fish...
and the result is a lot of waste.
310
00:40:52,160 --> 00:40:56,559
But for dolphins,
pooing on your friends is socially acceptable.
311
00:40:58,280 --> 00:41:03,039
It's full of pheromones - giving information
about the state and mood of other dolphins,
312
00:41:03,200 --> 00:41:05,319
as well as the food they've just eaten.
313
00:41:07,520 --> 00:41:09,879
It's all too easy to take a direct hit.
314
00:41:17,400 --> 00:41:22,399
This is actually a complement -
she really is a dolphin-friendly tuna.
315
00:41:26,840 --> 00:41:31,399
Out of the firing line,
Turtle is still having a bit of trouble keeping up.
316
00:41:33,240 --> 00:41:35,039
He valiantly does his best.
317
00:41:36,040 --> 00:41:39,799
But when they really press the accelerator,
there is nothing he can do.
318
00:42:12,240 --> 00:42:14,239
Tuna isn't so easily outclassed.
319
00:42:15,040 --> 00:42:17,919
And she soon spies
why the spinners are so excited.
320
00:42:21,640 --> 00:42:23,999
Bubbles stream from the spinners' blowholes,
321
00:42:24,160 --> 00:42:27,119
showing that the dolphins
are whistling out their names.
322
00:42:28,160 --> 00:42:29,919
(Whistling)
323
00:42:30,800 --> 00:42:34,999
These signature whistles fill the ocean
with glistening speech bubbles.
324
00:42:40,880 --> 00:42:44,439
It's a magical sight
that has never been filmed before.
325
00:42:50,320 --> 00:42:54,599
But the wonders continue as the reason
for their excitement becomes clear.
326
00:42:55,960 --> 00:42:57,959
Another super pod is approaching.
327
00:43:05,840 --> 00:43:09,359
Incredibly, the two groups start to combine.
328
00:43:10,800 --> 00:43:12,599
(Chattering)
329
00:43:15,920 --> 00:43:21,919
The numbers grow and grow until they form
the greatest dolphin gathering ever seen.
330
00:43:30,880 --> 00:43:37,079
This is the legendary mega pod,
made up of over 3,000 dolphins.
331
00:43:49,120 --> 00:43:53,119
Never have so many dolphins been filmed
in one underwater view.
332
00:43:53,960 --> 00:43:57,239
It looks more like a vast fish shoal
than a pod of dolphins.
333
00:44:03,960 --> 00:44:06,719
Dolphins can only reach these numbers
in the deep ocean
334
00:44:06,880 --> 00:44:08,879
where vast fish shoals can be found.
335
00:44:12,920 --> 00:44:16,399
Here, the ocean bottom lies 3,000 metres down.
336
00:44:22,600 --> 00:44:26,439
At the surface,
Spy Turtle has only just managed to catch up.
337
00:44:27,720 --> 00:44:29,359
(Whirring)
338
00:44:31,040 --> 00:44:34,439
Below, the new arrivals
start to get to know each other.
339
00:44:35,520 --> 00:44:37,519
And romance blossoms everywhere.
340
00:44:40,080 --> 00:44:44,159
Unlike the bottlenose,
they appear to be meeting in peaceful harmony.
341
00:45:01,880 --> 00:45:03,719
(Chattering)
342
00:45:06,080 --> 00:45:09,239
In the mega pod, it seems, free love reigns.
343
00:45:13,120 --> 00:45:17,199
And as Turtle discovers,
love indeed is all around.
344
00:45:19,320 --> 00:45:23,239
A pair of Olive Ridley turtles
are also caught up in the romantic mood.
345
00:45:38,080 --> 00:45:41,559
The male clasps his mate
using special claws on his flippers.
346
00:45:45,840 --> 00:45:49,719
But while he's on board,
the female is firmly in the driving seat.
347
00:45:59,280 --> 00:46:04,359
And when she shows an interest in Spy Turtle,
there is simply nothing he can do.
348
00:46:06,240 --> 00:46:10,319
Unfortunately for him,
she seems to prefer Spy Turtle.
349
00:46:24,240 --> 00:46:26,839
She strokes his face to show her interest.
350
00:46:38,880 --> 00:46:43,319
But Spy Turtle has a job to do,
he's here only to observe.
351
00:46:45,480 --> 00:46:47,479
And he leaves them to it.
352
00:46:49,400 --> 00:46:52,159
The natural order is restored once more.
353
00:46:57,520 --> 00:46:59,639
There's always more dolphins to film.
354
00:47:05,040 --> 00:47:08,559
Back in Mozambique, Spy Squid is also on duty.
355
00:47:12,920 --> 00:47:16,839
He soon discovers that the male bottlenose
are also in a playful mood.
356
00:47:18,800 --> 00:47:22,399
Pieces of seaweed and other trinkets
plucked from the ocean floor
357
00:47:22,560 --> 00:47:24,679
often become treasured possessions.
358
00:47:27,600 --> 00:47:29,279
(Chattering)
359
00:47:37,800 --> 00:47:40,199
The more interesting they are, the better.
360
00:47:45,440 --> 00:47:50,039
And wafting fronds of sargassum seaweed
are the most sought after of all.
361
00:47:55,120 --> 00:47:57,639
They delight in gathering and carrying them.
362
00:48:01,320 --> 00:48:03,719
And showing off their catching skills.
363
00:48:08,680 --> 00:48:12,679
But today, these seaweed garlands
have another purpose.
364
00:48:19,000 --> 00:48:22,599
The males carry them like floral bouquets
towards the females.
365
00:48:27,840 --> 00:48:32,119
The females react as before,
confronting the males with a show of strength.
366
00:48:38,200 --> 00:48:42,479
The youngster may now be over a year old
but his mother still shepherds him away.
367
00:48:42,640 --> 00:48:44,639
It's better to be safe than sorry.
368
00:48:46,600 --> 00:48:48,319
But something has changed.
369
00:48:48,480 --> 00:48:52,839
The males have come bearing gifts
and their plan seems to be working.
370
00:48:53,960 --> 00:48:57,039
A male with a bouquet
catches the eye of a young female.
371
00:48:58,040 --> 00:48:59,919
And he shows off his skills.
372
00:49:15,800 --> 00:49:17,319
She seems impressed.
373
00:49:22,040 --> 00:49:23,679
He drops the bouquet...
374
00:49:27,640 --> 00:49:29,639
..and she catches it.
375
00:49:36,880 --> 00:49:41,239
It's now her turn to flirt,
using the garland to tempt and tease.
376
00:49:47,800 --> 00:49:51,079
They may now be an item,
but they won't spend much time alone.
377
00:49:58,520 --> 00:50:02,559
His mates muscle in
and the female is spoilt for choice.
378
00:50:11,560 --> 00:50:14,039
No other mammal uses gifts in this way.
379
00:50:15,120 --> 00:50:20,119
It's another demonstration of their superior
intelligence and refined social skills.
380
00:50:27,120 --> 00:50:29,039
The two may have planned to be alone,
381
00:50:29,200 --> 00:50:33,079
but among bottlenose,
mating is rarely a private affair.
382
00:50:35,960 --> 00:50:38,799
Even the mother is swept up
in the flirtatious mood...
383
00:50:53,880 --> 00:50:57,559
..although she won't be ready to breed
until her boy leaves home.
384
00:51:00,920 --> 00:51:02,519
Back in the Pacific Ocean,
385
00:51:02,680 --> 00:51:05,999
Spy Tuna is on her final mission
with the spinner dolphins.
386
00:51:08,240 --> 00:51:11,039
She soon discovers another
extraordinary example
387
00:51:11,200 --> 00:51:13,799
of a dolphin's cooperation and intelligence.
388
00:51:16,040 --> 00:51:18,519
Super pods like these march on their stomachs.
389
00:51:18,680 --> 00:51:23,159
And, 30 miles from shore,
the deep ocean seldom disappoints.
390
00:51:25,640 --> 00:51:29,479
Their long-range sonar has detected
something down below -
391
00:51:32,080 --> 00:51:34,759
a shoal of lantern fish ascending from the deep.
392
00:51:38,080 --> 00:51:41,279
By day, these fish normally
live 1 ,000 metres down,
393
00:51:41,440 --> 00:51:43,639
so this is a rare sight indeed.
394
00:51:46,720 --> 00:51:51,639
Plans are quickly made and the spinners start
by pushing the fish closer to the surface.
395
00:51:53,440 --> 00:51:59,159
As the dolphins hug the outside edge, the fish
react as planned by moving upwards as a mass.
396
00:52:01,600 --> 00:52:03,919
More spinners add to the upward pressure.
397
00:52:08,240 --> 00:52:11,679
The huge shoal is gradually squeezed
closer together.
398
00:52:17,200 --> 00:52:18,879
The spinners keep up the pressure,
399
00:52:19,040 --> 00:52:22,919
pushing the fish towards
the surface and into an ever-tighter mass.
400
00:52:33,600 --> 00:52:35,679
The swirling shoal has nowhere to go.
401
00:52:36,960 --> 00:52:38,959
And now the feeding begins.
402
00:52:43,080 --> 00:52:45,759
The dolphins pick off any stragglers one by one.
403
00:52:46,440 --> 00:52:48,919
It requires hardly any effort at all.
404
00:53:07,040 --> 00:53:10,399
But in the ocean,
a feast is rarely kept secret for long.
405
00:53:17,440 --> 00:53:19,959
These are giant mobula rays -
406
00:53:21,200 --> 00:53:23,399
each with a wingspan of over two metres.
407
00:53:30,760 --> 00:53:35,679
They simply open their bucket-sized mouths
and scoop up a super-sized meal.
408
00:53:36,680 --> 00:53:39,079
Dozens of fish disappear in a flash.
409
00:53:49,000 --> 00:53:50,719
But this isn't their only trick.
410
00:53:50,880 --> 00:53:56,399
Their huge wings flick like a whip, stunning
or killing dozens of fish with every pass.
411
00:53:58,480 --> 00:54:01,159
The following rays will trawl up the victims
412
00:54:01,320 --> 00:54:04,519
and, in turn, their wing beats
create even more carnage.
413
00:54:10,240 --> 00:54:13,119
The spinners won't turn down a second course,
414
00:54:13,280 --> 00:54:15,559
especially one handed to them on a plate.
415
00:54:23,960 --> 00:54:25,959
And yet more rays keep coming.
416
00:54:41,200 --> 00:54:45,599
Together the spinners and the rays work
the shoal until every stomach is full.
417
00:54:46,320 --> 00:54:48,999
Even so, they hardly dent its numbers.
418
00:54:52,160 --> 00:54:55,439
Lantern fish are the most numerous fish
in the deep ocean.
419
00:54:56,040 --> 00:55:01,319
By fishing so far from land, the spinners
and rays gain a rare and sumptuous meal.
420
00:55:17,200 --> 00:55:20,799
Then, as silently as they arrived,
the rays are gone,
421
00:55:21,600 --> 00:55:23,679
leaving the dolphins to their games.
422
00:55:28,120 --> 00:55:32,199
Having eaten all they can,
the spinners celebrate as only they know how.
423
00:55:33,600 --> 00:55:35,599
They party way into the night.
424
00:56:37,080 --> 00:56:38,639
Back in Mozambique,
425
00:56:38,800 --> 00:56:42,719
the young male bottlenose
is now growing increasingly independent.
426
00:56:46,920 --> 00:56:50,999
He has learnt to succeed as a dolphin
by being curious about everything.
427
00:57:02,280 --> 00:57:06,919
And when Spy Clam produces a trail of bubbles,
he's instantly captivated.
428
00:57:10,600 --> 00:57:12,039
(Squeaks)
429
00:57:13,200 --> 00:57:15,759
Dolphins test everything with their mouths.
430
00:57:16,440 --> 00:57:20,399
But he soon discovers that bubbles vanish
as soon as they are touched.
431
00:57:21,960 --> 00:57:23,439
(Squeaks)
432
00:57:35,360 --> 00:57:37,959
Another young friend can't resist having a go.
433
00:57:38,720 --> 00:57:44,039
Irrepressible curiosity and constant learning
all adds to their exceptional intelligence.
434
00:57:51,120 --> 00:57:52,999
It's now time to move on.
435
00:57:53,160 --> 00:57:55,759
There's plenty more fun
to be had in the ocean.
436
00:57:57,160 --> 00:58:01,479
Especially as a new stage of life is just
beginning for the young bottlenose -
437
00:58:02,320 --> 00:58:04,519
an exciting time of independence.
438
00:58:06,800 --> 00:58:10,319
Next time,
find out what happens as he sets off alone...
439
00:58:12,920 --> 00:58:16,959
..step into the world of the orca,
the greatest dolphin in the ocean
440
00:58:17,120 --> 00:58:21,039
and take the ride of your life
on the back of a real-life spy dolphin...
441
00:58:21,840 --> 00:58:24,799
uncover more mysteries
of the dolphins' secret lives
442
00:58:24,960 --> 00:58:30,599
and discover what happens when one of
the spy creatures finally pushes his luck too far.
40596
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