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.

Spend time with researchers like Eckert, though, and you'll begin to see this turtle as a survivor. The leatherback can dive nearly a mile, swim across oceans, and keep itself warm in water close ...

As ancient as the dinosaurs, the leatherback sea turtle is something of a dinosaur itself — and the heaviest reptile on the planet. This champion swimmer, whose diving capabilities are unmatched by ...

This scene of the Leatherback sea turtle laying eggs in the sands of Satellite Beach was seen at 6:30 p.m. on the evening of April 7.

Researchers at Loggerhead Marinelife Center found the second earliest loggerhead nest in its monitoring history on April 6.

A 1-square-meter plastic sheet was found inside a dead leatherback sea turtle on a beach in Fukui Prefecture, the largest piece of plastic debris reported ingested by the species, researchers said.

Leatherback turtles, the largest of all sea turtles, were determined to be struggling the most. They are the only species that lack scales and a hard shell, and swim more than 10,000 miles a year ...

Leatherback turtles undertake an enormous migration from the temperate feeding waters to the tropical breeding waters, a journey of over 7,000km. These turtles are increasingly spending time ...

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 ...