Turtle shells evolved over the course of 300 million years, but self-defense wasn't the initial driver, researchers think.

An adventurer has revealed what it's like to walk into the territory of these feared predators. Find out more.

The endangered Vallarta mud turtle faces severe habitat loss in Mexico, leaving its tiny surviving population at urgent risk.

India's olive ridley turtle numbers appear to have rebounded after years of patchwork efforts to stem their decline. Can it ...