Did you know a horseshoe crab is not a crab, but more closely related to spiders? These bottom-dwelling coastal creatures have a fascinating anatomy with four eyes, twelve legs and a tiny set of pinchers. Horseshoe crabs bury themselves in mud and sand to feast on clams, worms and other small creatures. Talk a walk along the Wellfleet Bay in the spring and see lots of horseshoe crabs burying their eggs in the sand. Size 1” X 2” X 4.75”.