Leatherback sea turtle

The luth, also known as the leatherback sea turtle, is the biggest turtle alive today. Unlike other sea turtles, it has a soft, leathery shell instead of a hard one. These gentle giants swim oceans worldwide, though some groups are struggling to survive.

• A fully grown luth can stretch longer than a pickup truck, reaching 2.7 meters.
• Instead of a hard shell, its back is covered with flexible, oily skin.
• At 500 kg, it outweighs every reptile except crocodiles and alligators.