Horseshoe crabs use different habitats depending on what stage of development they are on. They lay eggs along coastal beaches, and when they grow up they are usually found on the ocean floor of tidal flats. Adult horseshoe crabs tend to feed deeper in the ocean.
Horseshoe crabs will usually eat clams and worms. Their eggs are eaten by bird, sea turtles, and many other sea life. Their eggs are an important food source for at least 11 species of migratory shore birds.
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