Leatherback sea turtles are the largest turtles in the world, and are fourth in size among all current reptiles.

Their body is protected only by leathery, oily skin, rather than a hard shell. The leatherback’s front flippers can grow to a spread of 2.7 meters, and the animal itself measures from 1.8 to 2.2 meters long. These massive turtles weigh 250 to 700 kilograms. The biggest ever found was slightly longer than 3 meters and weighed 916 kilograms. [...]