Out there with the camera are hydraulics, thrusters, and hundreds of other essential parts ... The ocean is pitch-black. At about 700 feet the sub’s dazzling lights bring the bottom into view.

In 1977 scientists discovered that at the deepest parts ... the bottom shimmered with the difference in hot and cold, as very hot water spewed out of vents into the 3-degree Centigrade ocean ...

Through one of the primary carbon storage mechanisms, the biological carbon pump, phytoplankton (microscopic marine plants at the bottom of the oceanic food chain) take up CO 2 in the surface ocean ...