Pippi shrimp is not shrimp. Although Pippi shrimp is called shrimp, it does not belong to shrimp. Shrimp refers to arthropods, Crustacea, soft armor Subclass, Decapoda, such as Macrobrachium Macrobrachium, Krypteridae, Penaeidae, etc. The name of Pippi shrimp is Gu Xia, which belongs to arthropods, crustaceans, soft armor subclass and stomatopoda, which is different from shrimp. Squid lives in caves and often digs caves at the bottom of sand or sediment in shallow water. Most caves are U-shaped. Stomatopod animals are carnivores, preying on small invertebrates.