Crabs are decapod crustaceans of the infraorder Brachyura, which typically have a very short projecting "tail" (abdomen). Crabs are generally covered with a thick exoskeleton, composed primarily of highly mineralized chitin, and armed with a single pair of "claws" (chelae). Crabs are found in all of the world's oceans, while many crabs live in fresh water and on land, particularly in tropical regions. Crabs vary in size from the pea crab, a few millimeters wide, to the Japanese spider crab, with a leg span of up to 4 metres (13 ft). https://en.wikipedia.org/wiki/Crab This model is based on "Blue crab" by "Julian Johnson-Mortimer" licensed under CC BY 4.0. https://sketchfab.com/3d-models/blue-crab-084c87634fab4f2bbc3a5866789014e3
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