Animals have evolved crab-like bodies at least five times throughout history, a process known as carcinization.

With copper-blue blood prized by modern medicine and a body plan older than dinosaurs, the horseshoe crab reveals how ancient ...

If you have ever looked closely into a rockpool along the U.K. coastline, you may have been lucky enough to find a tiny hermit crab scuttling about. What you might not realize is that hermit crabs are ...

Four new species of freshwater crab, bright purple in colour, have been discovered in the biologically diverse but ecologically-threatened Philippines, the man who found them said Saturday.