Horseshoe crabs are crustaceans found off the coasts of North America and Asia.

The horseshoe crab has a hard outer shell to protect it from its enemies. Its shell is in the shape of a horseshoe. These animals are relatives of spiders and scorpions. They have six pairs of legs.

Horseshoe crabs eat worms and young shellfish. They find their prey at night while walking along the seabed.

Horseshoe crabs burrow through mud, searching for food.