Leatherbacks are the largest turtles on Earth, growing up to seven feet long and exceeding 2,000 pounds. These reptilian relics are the only remaining representatives of a family of turtles that ...

This story appears in the May 2009 issue of National Geographic magazine. One late summer day in 1961 a biologist named Sherman Bleakney got a telephone call about a strange sea creature that ...

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.

A leatherback sea turtle was spotted on New Smyrna Beach, marking the earliest recorded sea turtle nest on County-managed beaches. Although sea turtle nesting season officially starts on May 1 in ...

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 ...