The leatherback turtle is the world’s largest living turtle, reaching weights of 700 to 2,000 pounds and growing to lengths of up to eight feet from snout to tail. The leatherback has no visible shell but rather a carapace made up of hundreds of bony plates, covered with a leathery skin. These rare sea turtles live in tropical and temperate waters, but they have also been sighted in cooler waters. Leatherbacks nest in tropical locations and feed on jellyfish. Leatherbacks were listed as endangered in 1970.