And incredible pressure as you go down, which is why the sea is so unknown. It s one of the main impediments. And I have an example here to show you what happens as you go down. It was crushed into that. It got squeezed down into a tiny little fraction of its normal size.
Sea creatures can handle it because they re mostly water, which is virtually incompressible.
Well, scientists have assumed for centuries that animals and life could only exist in sunlight. And they have found something very different. On these hot volcanic gases which are immense. There s 46,000 miles of them. That s like seven times around the Moon.