and it's being just dumped out, at incredible rates.
And animals are thriving -- and we probably came from here.
That's probably where we evolved from.
BL: This bacteria that we've been talking about
turns out to be the most simplest form of life found.
There are a number of groups that are proposing
that life evolved at these vent sites.
Although the vent sites are short-lived --
an individual site may last only 10 years or so --
as an ecosystem they've been stable for millions -- well, billions -- of years.
DG: It works too well. You see there're some fish inside here as well.
There's a fish sitting here.
Here's a crab with his claw right at the end of that tube worm,
waiting for that worm to stick his head out.
(Laughter)
BL: The biologists right now cannot explain
why these animals are so active.
The worms are growing inches per week!
DG: I already said that this site,
from a human perspective, is toxic as hell.
Not only that, but on top -- the lifeblood --