Arthropoda – Malacostraca

If you aren’t lucky enough to see a crab alive, you may find part of their hard shell or exoskeleton (external skeleton) on the beach.  The exoskeleton of crustaceans serves as a suit of armour and helps protect them from predators. The animal must periodically shed their exoskeleton to grow –
a process known as moulting.

Did you know?

Some crabs can spend long periods of time out of the water. They keep their gills moist in special gill chambers and extract oxygen from the air.