Narrator: A turtle's shell is as much a part of its body as our rib cage is of ours. In fact, it is their rib cage, and their spine, and their vertebrae, and their sternum. Basically, a turtle's ...

Turtles belong to the most unique group of vertebrates, credit goes to their famous shells. While most people think of the shell as a shelter in the first place, it contains a lot of secrets related ...