Ecdysozoa is a group of animals that includes arthropods (insects, crustaceans), nematodes, and other worm-like organisms. One of the defining hallmarks of ecdysozoan animals is ecdysis, the process ...

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 shells on ...

Ecdysozoans include arthropods (such as insects and crabs), nematodes (roundworms), and smaller groups like kinorhynchs ("mud dragons") and priapulids ("penis worms"). Their central nervous ...