CT scan of the front of a skate, showing the hard, tooth-like denticles on its skin (shown in orange). Credit: Yara Haridy CT scan of the front of a skate, showing the hard, tooth-like denticles on ...

Many animals couldn’t survive without their exoskeletons. Insects, spiders, crustaceans, and coral are just some of the creatures that wear their protection on the outside. But identifying the very ...