[F]or the first time... in human history we have the technology and... methods to... understand these animals and crack into their code... - James Nestor

But they could not crack the communication code. To do that you have to get below the surface. You have to see these animals... to gauge their behavior.

We're born of the ocean. ...At the fifth week of a fetus's development, its heart has two chambers, a characteristic shared by fish.

Truebridge just dove thirty stories... all on one lungfull of air... The pressure... is more than ten times that at the surface, strong enough to crush a Coke can. At thirty feet. the lungs collapse to hald their normal size; at three hundred feet they shrink to the size of two baseballs. ...The dives don't look forced... as if they all really belong down there. As if we all do.