Leatherback sea turtle

The leatherback sea turtle (Dermochelys coriacea) is a species of sea turtle and is the largest of all living turtles and the heaviest non-crocodilian reptile. It is the only species in the genus, Dermochelys, and the only living member in the family, Dermochelyidae. It can easily be distinguished from other sea turtle species from it's lack of a bony shell; instead, the carapace is covered with oily flesh and flexible leather-like skin, which it is named after.