[T]here is no oxygen tank at the end of the rope, and if there had been... their lungs would have exploded... and their blood would have bubbled with… - James Nestor

It's a hard thing to fathom, the concept that you, me, the birds, and the bees—all life that is and has ever been—came from a few chemical reactions on some ugly rocks a few billion years ago. Proposing such a theory... [e]ven 50 years ago... might have gotten you... ostracized by the scientific community.
That all changed in 1977 when... chartered a research vessel... to the Galápagos Trench. Corliss suspected that a... , was erupting on the deep seafloor... [A]t a depth of around 2,500 meters... ANGUS’s temperature gauge registered a... spike. After several hours, the team... developed the film. ...There was life..—crabs, mussels, lobsters, worms—all flourishing... The incredible pressure, 250 times that on the surface, kept the water from turning to steam.

[A] few years ago a French researcher and a Belgian freediver... thought "What if we try freediving with whales? Maybe we could get close enough... and start communicating..."

He had a dolphin telephone... and he would listen in as these dolphins would have these very complex conversations...