Leatherback sea turtles are named after their leathery skin and are notable for their size and power. They are the largest sea turtle and one of the largest reptiles, weighing as much as 900 kg. They can out-swim a shark and dive as deep as a whale, reaching down to 1230 metres. They produce the largest hatchlings and migrate the furthest distance. They are found in all the world’s oceans from the Arctic to the tropics and down to the Southern Ocean, and are the found further north than any other land or sea reptile.