When you think of sea animals with shells, you realize that many different animals in the seas and oceans carry their homes and protection from predators on their backs. The shell-wearing animals are ...

These crustaceans have been misnamed for two reasons: First, they’re not true crabs, like blue crabs, in that they don’t have a uniformly hard exoskeleton and can’t grow their own shells.

which scavenge shells as armour for their bodies, are turning increasingly to plastic waste instead. The conclusion is based on analysis of photos, taken by wildlife enthusiasts, and published online.