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More About Crabs ...
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Crabs are various species of decapods. They are crustaceans with five pairs of legs, the first pair modified to form a pair of pincers, a flattish shell, and a short, broad abdomen folded under its thorax. There are two main groups of crabs: the Brachyura or true crabs, and the Paguroidea, or hermit crabs. Crabs are related to lobsters and shrimps.
Groups of crabs include:
Blue crab
Dungeness crab
Coconut crab
Fiddler crab
Ghost crab
Hermit crab
Japanese spider crab (largest crab alive)
Jonah crab
Lady crab, Calico crab
Mangrove crab
Mole crab
Mud crab, Black fingered mud crab, White-tipped mud crab
Oyster crab
Rock crab
Pea crab
Purse crab
Spider crab
Stone crab
A number of animals with a similar shape are commonly called crabs, including the crab louse (an insect), the Horseshoe crab (in the class Merostomata).
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Source: Wikipedia Read more about Crabs
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