Crab is an omnivore living in the seashore and shallow water, the crab surface will have a lot of silt sediment, the internal organs are also inedible, generally need to be cleaned, processed before cooking, will not be directly on the pot to cook, boiled in the pot with a few slices of ginger, deodorization and refreshing is very good.
The crab belongs to the soft armor class, decapod order, is a crustacean, the body is protected by a hard shell, rely on gills to breathe. In biological taxonomy, it and shrimp, lobster, hermit crabs are the same kind of animal. The vast majority of species of crabs live in the sea or offshore areas, with some inhabiting freshwater or land. Common crabs include pike crabs, distant sea pike crabs, green crabs and Chinese mitten crabs (river crabs, hair crabs, clear water crabs).