Shell integration typically involves 50 to 60 individual bones fusing into a permanent structural cage. The carapace creates a mechanical constraint that prevents the chest from expanding during ...

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 ...

In cartoons, when a turtle is spooked, it retreats into and closes up its shell. While used for comic effect, this imagery is based in fact — although not all turtles are capable of this protective ...

NEW ORLEANS -- It's a marvelously ugly beast, with spiked and ridged armor, a sharply hooked beak, a fishing lure in its mouth and a nasty bite. But the alligator snapping turtle's hard shell holds ...

For years, the Coleman family's fishing trips on the Alabama Gulf Coast were routine. But in 2021, their outing near a riverbank led to an odd find: the shell of a 32-million-year-old leatherback sea ...