Galápagos giant tortoises are known for reaching impressive sizes. One such reptile's massive measurements blew even his brethren out of the water.

There are more tortoises than humans on this UNESCO World Heritage Site – in fact, it’s home to the largest wild Aldabra giant tortoise population in the world Esmeralda is a rather remarkable ...

Growing more than 10 feet (3 meters) long, Protostega was among the largest turtles to ever live. Unlike most turtles, whose shells are made of expanded and fused bones that form a relatively ...

This story appears in the June 2019 issue of National Geographic magazine. The first time a tortoise walked through my hut at Middle Camp on Aldabra Atoll, I was amazed. I grabbed my camera and ...