Hermit crabs are small crabs that carry shells on their backs, both for a home and for safety. But with shells being harder to find year after year, hermit crabs have had to spend more time in shells ...

Several locals have reported "unusual amounts of dead horseshoe crabs" washing up on Massachusetts beaches in recent days. However, officials say the spectacle is no cause for concern, as they're just ...

MUKILTEO — State biologists reassure community members that what appears to be dead crabs littering beaches near Mukilteo are mostly molted shells. People have reported large numbers of Dungeness crab ...

Crabs must molt because their hard, calcified exoskeleton cannot grow with them. Before molting, they reabsorb calcium and weaken their old shell from the inside. During ecdysis, they painfully pull ...