Cartoons often suggest turtles wear shells like removable armor. Those stories show turtles stepping out, swapping shells, or treating them like clothing. Biology disagrees. A turtle shell is not an ...

It's a long-held idea that turtles can tuck their heads into their shells when threatened. But is it true? And is this protective trick why turtles the world over have shells today? The answer is that ...

Do turtle shells actually consist of modified ribs? The answer, surprisingly, is yes. This weird-but-true claim went viral in mid-June 2021 when Twitter user and post-doctorate turtle expert Ceri ...

A sea turtle’s shell is living bone fused directly to its spine and ribs. It is not a detachable shield or an external case, as certain quirky cartoons have shown. The shell grows with the turtle, ...

When you buy through links on our articles, Future and its syndication partners may earn a commission. The broad-shelled river turtle (Chelodina expansa) falls into a group known as side-neck turtles.