It's a water world, our blue planet.
Life couldn't survive without it.
And thanks to it, a mind-blowing diversity of creatures thrive beneath the surface.
Some creatures want to keep their feet dry, but there are others that can't wait to dive in.
Born to enjoy the riches underwater, they must master their body's adaptations, learn to find food, to escape danger, and above all, become expert swimmers.
Whether it's in rivers, on beaches, or in the deep ocean, all must overcome the obstacles and fulfill their destiny.
All are born to swim.
Of all the habitats on Earth, the ocean is perhaps the most challenging.
Here, salt, cold temperatures, currents and predators can make life difficult.
It's not an obvious place to want to bring up your babies, but even in these waters, generation after generation beat the odds.
They have overcome the challenges to become some of the most beautiful and graceful of creatures.
But any baby born to swim has a lot to learn.
On a windswept beach, a gray seal mother prepares to welcome a new pup.
The birth is easy.
He comes packaged for the waves in a streamlined sausage shape.
He's 14 kilos at birth, only a tenth of his mother's weight.
She needs to get his coat clean and dry to keep him warm.
It's a cold birthday.
During these first moments, a close bond is formed between mother and pup.
The pup's first challenge is to find his mother's teats.
Her milk's like clotted cream.
It contains 60% fat and will fuel the pup's growth.
He'll gain two kilos a day.
Mammals are often attentive mothers, but others can be surprising.
A lumpsucker, a slow-moving fish of the seabed, carefully tends its nest.
It's a water world, our blue planet.
Life couldn't survive without it.
And thanks to it, a mind-blowing diversity of creatures thrive beneath the surface.
Some creatures want to keep their feet dry, but there are others that can't wait to dive in.
Born to enjoy the riches underwater, they must master their body's adaptations, learn to find food, to escape danger, and above all, become expert swimmers.
Whether it's in rivers, on beaches, or in the deep ocean, all must overcome the obstacles and fulfill their destiny.
All are born to swim.
Of all the habitats on Earth, the ocean is perhaps the most challenging.
Here, salt, cold temperatures, currents and predators can make life difficult.
It's not an obvious place to want to bring up your babies, but even in these waters, generation after generation beat the odds.
They have overcome the challenges to become some of the most beautiful and graceful of creatures.
But any baby born to swim has a lot to learn.
On a windswept beach, a gray seal mother prepares to welcome a new pup.
The birth is easy.
He comes packaged for the waves in a streamlined sausage shape.
He's 14 kilos at birth, only a tenth of his mother's weight.
She needs to get his coat clean and dry to keep him warm.
It's a cold birthday.
During these first moments, a close bond is formed between mother and pup.
The pup's first challenge is to find his mother's teats.
Her milk's like clotted cream.
It contains 60% fat and will fuel the pup's growth.
He'll gain two kilos a day.
Mammals are often attentive mothers, but others can be surprising.
A lumpsucker, a slow-moving fish of the seabed, carefully tends its nest.
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