leatherback
/ˈlɛðərˌbæk/
noun
- A very large sea turtle with a leathery shell instead of a hard one, the largest living turtle species.
- Leatherbacks are endangered mainly because of plastic pollution and fishing nets.
- The leatherback can weigh over 1,500 pounds and dive deeper than any other sea turtle.
- Scientists tracked a leatherback as it swam across the entire Pacific Ocean.