Taken From Blue Planet II This bold cinematic experience takes viewers on a magical adventure across the greatest, yet least known, parts of our planet – our oceans. Since Blue Planet aired in 2001, our understanding of life beneath the waves has completely changed. Travelling from the icy polar seas to the vibrant blues of the coral atolls, this series shares these astonishing new discoveries. Meet the strange octopuses lurking in the depths of the Antarctic Ocean. Watch giant trevally fish leap to catch birds in mid-air. And ride on the back of a hammerhead shark as it attacks. Inspiring awe and wonder, Blue Planet II reveals surprising new places, charismatic new characters and extraordinary new behaviours.
Welcome to Sea Nature The world is an amazing place full of stories, beauty and natural wonder. Here you'll find 50 years worth of entertaining and thought-provoking natural history content. Dramatic, rare, and exclusive, nature doesn't get more exciting than this. #BluePlanetII#BBCEarth
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But most of the creatures come together for a very different reason.
The giant cuttlefish.
The largest of all cuttlefish.
They live for just one or two years.
Now, as the Australian summer draws to an end,
they have one last act to complete.
To find a mate.
But there are over 100,000 males
competing for the arriving females in this one bay.
Among them, a giant, a true goliath.
He probably weighs about 10 kilos.
Bands of colour sweep across his skin.
That's how cuttlefish communicate.
This smaller male couldn't possibly take him on.
Beside Goliath and under his protection,
a female who has just mated with him.
But other rivals are still interested.
It seems a small male wouldn't stand a chance.
The female is now displaying a white stripe along her side nearest Goliath.
It's a clear signal that she no longer wants to mate with him.
It's all the encouragement that the little male needs.
He's going to have to use trickery.
He tones down his colours and tucks in his arms.
He's just the right size to mimic a female.
Goliath is deceived.
The small male now displays a white stripe,
just like the real female, to deter his advances.
He slips beside her and they mate.
By mating with multiple partners,
the female ensures the greatest genetic diversity for her young.
The sneaky male leaves, his final act complete.
So even among giant cuttlefish, it seems,
it's not all about size.
