Squid belongs to Crustacea and Arthropoda. Alias "urine shrimp" (often misspelled as Seto shrimp or urine shrimp), mantis shrimp, Parthenocissus tricuspidata, Parthenocissus tricuspidata, grilled shrimp and squid shrimp, also known as "Fu Gui shrimp" and "Pippi shrimp". There are about 400 species in the world, most of which are distributed in tropical and subtropical coastal areas. When caught, the abdomen will release colorless liquid, so it is also called "urine shrimp". The head and chest have a pair of sickle-shaped front feet similar to mantis, three pairs of feet and tail fins (swimming fins) in the abdomen. Carnivorous, feeding on other crustaceans and small fish, coastal earthworms, nereis, etc.