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www.horseshoecrab.org/nh/eco.html

Horseshoe Crabs and their Neighbors. What species depend on the horseshoe for food? Shorebirds. The Delaware Estuary is the largest staging area for shorebirds in the Atlantic Flyway and is the second largest staging site in North America, with an estimated 425,000 to 1,000,000 migratory shorebirds converging on the Delaware Bay to feed and rebuild energy reserves prior to completing their ...

prezi.com/vbndlhl1uw2j/horseshoecrab-ecological-niche

The horseshoe crab has a total of 10 eyes; two lateral eyes, two median eyes, one endoparietal eye, two rudimentary lateral eyes, two ventral eyes and one photoreceptor. While there are many eyes on the horseshoe crab most of them have “poor” sight and are sensitive to light and

en.wikipedia.org/wiki/Horseshoe_crab

Horseshoe crabs are marine and brackish water arthropods of the family Limulidae, suborder Xiphosurida, and order Xiphosura. Their popular name is actually a misnomer, for they are not true crabs. Horseshoe crabs live primarily in and around shallow coastal waters on soft sandy or muddy bottoms.

dnr.maryland.gov/ccs/Pages/horseshoecrab-conservation.aspx

Horseshoe crab populations occupy an important ecological niche in estuarine and coastal habitats along the Mid-Atlantic coast. Adult horseshoe crabs are food for sea turtles, sharks and terrestrial species such as raccoons and foxes. Their eggs are a vital food source for hemispheric shorebirds.

en.wikipedia.org/wiki/Mangrove_horseshoe_crab

The mangrove horseshoe crab (Carcinoscorpius rotundicauda), also known as the round-tailed horseshoe crab, is a chelicerate arthropod found in tropical marine and brackish waters in India, Bangladesh, Indonesia, Malaysia, Singapore, Thailand, Cambodia, Vietnam, China and Hong Kong.It may also occur in Sri Lanka, Myanmar and the Philippines, but confirmed records are lacking.

www.tolweb.org/treehouses/?treehouse_id=4822

As horseshoe crabs grow, they move to deeper waters and continue to moult. At between nine to twelve years of age, the horseshoe crab reaches sexual maturity and may subsequently live for another ten to fourteen years. Ecological Niche. The horseshoe crab plays an important ecological role in its food web.

horseshoecrab.org/con/con.html

Horseshoe crabs are the primary bait for the American eel and conch fisheries in many mid-Atlantic States. In 1996, the commercial harvest of horseshoe crabs was estimated to be a $1.5 million industry. Horseshoe crabs are vital to medical research and the pharmaceutical products industry.

bioweb.uwlax.edu/bio203/2011/volz_mack/habitat.htm

The most popular area for the horseshoe crabs is in the Delaware Bay. They are mainly found in shallow waters with soft ocean floors. The habitat for horseshoe crabs depends on what stage it is in, whether the horseshoe crab is spawning, breeding, or just growing to maturity.

science.howstuffworks.com/life/biology-fields/horseshoe-crabs-endangered...

When you look at a horseshoe crab, you're looking a half billion years into the past. These primitive animals were around long before the dinosaurs and survived ice ages and asteroids almost unchanged. Their cozy ecological niche necessitated few body modifications, so while horseshoe crabs today ...

myfwc.com/research/saltwater/crustaceans/horseshoe-crabs/facts

Horseshoe crab larvae emerge from their nests several weeks after the eggs are laid. Juvenile horseshoe crabs look a lot like adults except that their tails are smaller. The young and adult horseshoe crabs spend most of their time on the sandy bottoms of inter-tidal flats or zones above the low tide mark and feed on various invertebrates.