Leatherback Turtles, Giant Squids, and Other Mysterious Animals of the Deepest Seas

The ocean is one of the most extreme environments on Earth. The deepest ocean zones challenge animal survival in unique ways. When light and warmth totally disappear, when pressure can crush most bodies, and when food is extremely rare, how do deep-sea animals cope? Scientists have sent remotely operated vehicles to the sea floor to capture images and videos of these amazing creatures in hopes of answering these questions. Their expeditions have revealed amazing information about extreme deep-sea animals.