English name:
Leatherback Sea Turtle

Japanese name:
Osagame 長亀

Scientifc name:
Dermochelys coriacea

These turtles do not nest in japan, however they can be found off the coast during different times of year. They feed on jelly fish. While most turtles have a shell made of bone, the Leatherback's shell is made of skin and oily flesh..