100 degrees, 20-25 minutes.

The crab (páng xiè) belongs to the class of soft armor, decapods, and is a crustacean whose body is protected by a hard shell and breathes through its gills. 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, hairy crabs, clear water crabs).

Habitat

A small number of crabs grow and reproduce exclusively in freshwater, where they tend to live under rocks in mountain streams. A few crabs, such as the ground crab, are adapted to life on land, burrowing in moist mud holes and migrating to the sea during the breeding season. Most crabs are omnivorous. Some crabs are carnivorous, such as the pike crab, which preys on fish, shrimp and mollusks. A few crabs, such as window crabs, scrape or filter-feeding algae and organic debris.