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, ...

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 ...

As measures to protect sea turtles ebb and flow, the turtle’s “lost years” spent out at sea after they hatch on beaches along Florida and around the tropics have remained a tricky factor in ...