Arthropods: Blue Crab Molting


Arthropods’ exoskeleton must be shed or molted when they grow.  This sequence shows how a blue crab must pull its legs and body out of the old shell.

Next Generation Science Standards for this Video

Arthropods must shed their rigid exoskeleton in order to grow. A new soft exoskeleton expands before it hardens so the animal within has room to grow.