Once prevalent in every ocean except the Arctic and Antarctic, the leatherback population is rapidly declining in many parts of the world. While all other sea turtles have hard, bony shells ...

This unique beak means that leatherback sea turtles can eat up to 16,000 calories in jellyfish a day! Evolving to eat jellyfish has resulted in unique biology that allows them to withstand ...

So a few animals retain primitive systems with the sole purpose of measuring ambient light—of which the most unusual is the leatherback sea turtle, one of the world’s largest reptiles.

Sea turtle season doesn't start until May 1, but a female leatherback crawled onto Vanderbilt Beach and laid a nest, the first historic account of this massive species laying eggs on this beach.

But there are some exceptions. Sea turtle populations in the Atlantic Ocean are more likely to be recovering than those in Pacific waters. And leatherback turtles are not faring as well as other ...