Sure. Crab shells can be eaten, but after processing. Chitin is made of crab shells. However, untreated crab shells will do harm to human body and should not be eaten directly. Crab is a crustacean belonging to the class mollusca, Decapoda, whose body is protected by a hard shell and breathes through gills. Taxonomically, it is the same kind of animal as shrimp, lobster and hermit crab. Most kinds of crabs live in the sea or offshore areas, and some live in fresh water or land.

Sure. Crab shells can be eaten, but after processing. Chitin is made of crab shells. However, untreated crab shells will do harm to human body, and may puncture the throat or stomach, so they should not be eaten directly. Crab is a crustacean belonging to the class mollusca, Decapoda, whose body is protected by a hard shell and breathes through gills. Taxonomically, it is the same kind of animal as shrimp, lobster and hermit crab. Most kinds of crabs live in the sea or offshore areas, and some live in fresh water or land. Common crabs are Portunus trituberculatus, Portunus trituberculatus, Eriocheir sinensis and Eriocheir sinensis (Eriocheir sinensis, Eriocheir sinensis and Eriocheir sinensis).