Beautiful Portrait Of Crab Are Decapod Crustaceans Of The Infraorder Brachyura. Crabs Are Generally Covered With A Thick Exoskeleton, Composed Primarily Of Highly Mineralized Chitin And Armed With A Single Pair Of 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.

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