The leatherback sea turtle is the largest and heaviest living turtle. It can grow to 5ft 11in and weighs up to 500kg. It is the only living species of the dermocheltdae family, characterized by a different shell structure from other turtle shells. Other turtle shells have a bony structure, but the leatherback turtle’s shell is oily and flexible, like leather, hence the name. 

You will find leatherback turtles in the Atlantic, eastern Pacific, and western Pacific oceans. In addition, they inhabit all tropical and subtropical oceans. Adult leatherback turtles feed on jellyfish, fish, sea urchins, snails, cnidaria, and tunicates.

Also, the leatherback has a relatively long lifespan and can live up to 50 years or more. Sadly, leatherback turtles are endangered due to overharvesting and human encroachment on their natural habitats3.