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The motor output to leg 4 remains intermediate between proportional and return stroke constant in sea water and in sand. On the basis of the segmental specialisation of the motor patterns for the legs, we hypothesize that sand crab digging may be an evolutionary mosaic of disparate ancestral locomotor behaviours...
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www.ncbi.nlm.nih.gov/pubmed/9639588
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A full description of the anatomy of E. talpoida is given by Snod- .... too deeply by sand drift or, as in the case of the mole crab, they are migratory in ...
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jeb.biologists.org/cgi/reprint/53/3/701.pdf
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As the horseshoe crab moves, the claws on the walking legs probe the sand for food. Horseshoe crabs are carnivores, but the food must be small enough to be swallowed whole since the claws are too weak to tear larger prey up into smaller bits. ... In reading the description of the anatomy, I was overwhelmed with the smell...
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www.dailykos.com/story/2007/7/6/192947/7568
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As the horseshoe crab moves, the claws on the walking legs probe the sand for food. Horseshoe crabs are carnivores, but the food must be small enough to be swallowed whole since the claws are too weak to tear larger prey up into smaller bits.
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www.dailykos.com/storyonly/2007/7/6/192947/7568
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Anatomy: The Horseshoe Crab has a hard outer shell (an exoskeleton), 5 pairs of jointed legs and a pair of pincers. The Horseshoe Crab is up to 2 ft (60 cm) long ... Reproduction: Horseshoe Crabs hatch from eggs that the female lays. She lays roughly 20,000 small, green eggs in holes that she digs in the sand on the beach.
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www.enchantedlearning.com/subjects/invertebrates/arthro...
www.enchantedlearning.com/subjects/invertebrates/arthropod/Horseshoecrab.shtml
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Anatomy; Although crabs come in a variety of shapes and sizes they all have the same general body plan. All crabs have one pair of chelipeds and four pairs of walking legs. Also referred to as claws, nippers or pincers, the chelipeds are ... Home Main menu Crab Gallery Anatomy Reproduction Sense Organs Distribution...
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museumvictoria.com.au/crust/crabbiol.html
museumvictoria.com.au/crust/crabbiol.html
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A comprehensive exploration of horseshoe crab natural history, anatomy and conservation: contains research and educational material, plus collections of poems, images and activities. ... For teaching resources, information on sanctuaries, crab counting, or our Just Flip 'Em program, visit the Get Involved section and...
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www.horseshoecrab.org/
www.horseshoecrab.org/
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Facts and figures on the horseshoe crab. ... A horseshoe crab's tail, while menacing, is not a weapon. Instead, the tail is used to plow the crab through the sand and muck, to act as a rudder, and to right the crab when it accidentally tips over.
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www.beach-net.com/horseshoe/Bayhorsecrab.html
www.beach-net.com/horseshoe/Bayhorsecrab.html
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Netarts Bay Watershed, Estuary, Beach and Sea (WEBS) Advisory Committee ... Crab Anatomy. The Dungeness crab is a member of the ten-footed crustaceans, the decapods. Its two forward legs, the pincers, technically called chelipeds, are used for both defense and feeding. The remaining eight legs are for walking.
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www.netartsbaytoday.org/html/dungeness_crab.html
www.netartsbaytoday.org/html/dungeness_crab.html
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