And then two of those arms underneath slowly moving,

so the rock is just slowly moving away.

And then she changes

into this extraordinary, wobbly, flowy old lady in a dress.

Perhaps she's trying to mimic

kelp or algae moving in the swell...

and, at the same time, is slowly moving away.

And this is how she works.

This incredible creativity to deceive.

An octopus is essentially a snail that's lost its shell in evolution.

A very fragile, liquid, soft animal

that relies on tremendous intelligence.

She's got no mother or father to teach her anything. She's alone.

'Cause you've got all these different types of predators, all hunting her.

So, over millions of years, she's had to...

come up with the most incredible methods to deceive them.

And she's got to learn fast because

she's only got just over a year to live.

When you're diving alone, everything about my kit has to be perfect.

And I've gotta be prepared for all eventualities.