Leatherback Turtles are listed as Critically Endangered, and the largest of the sea turtles measuring up to 3m. They breed in tropical waters with some animals travelling down the coast of WA to the southern ocean to feed on jelly fish. They have a unique body structure that helps them to maintain a higher body temperature than other reptiles, allowing them to endure the cold temperatures of the southern ocean. Populations of this species are threatened due to the taking of eggs for food by humans on their nesting beaches, and are accidentally caught as bycatch in commercial fisheries.