Provides images and description for the horseshoe crab.

Anatomy printout and information about this shelled invertebrate that lives on the ocean floor in warm, shallow waters.

Offers an introduction to horseshoe crabs. Find out more about this 'living fossil' and take a short quiz about these critters.

Contains facts about the oldest living fossil in Maryland, the Horseshoe Crab. Includes anatomy, conservation, medical uses, and raising crabs.

Description and images of the horseshoe crab, which are not crabs at all, but distant relatives of the spider.

Facts and images provided for the Limulus Polyphemus or horseshoe crab.