This entry is missing Overview , add relevant content to make the entry more complete, and it can also be upgraded quickly. Hurry up edit Come on! Abalone shells are ear shaped, oval or oblate oval, with few spirals and a large body spiral layer.
There is a row of small holes on the left side of the shell, with several openings on the front edge, and many others are occluded. The anus and gills are located in this position, and breathe and excrete through the openings. The shell mouth is very large, with pearl luster inside, without operculum. Most of them are temperate and tropical species, mainly inhabiting in the shallow sea, where the tide is unobstructed and algae are clustered; Use developed feet to live on rocks and feed on algae. Foot muscles are extremely developed, and the nutritional value is high. It is a valuable seafood. Shells, called "cassia," are widely used in traditional Chinese medicine and can also be used as shell carving handicrafts. There are about 8 species along the coast of China. Haliotis discus hannai (Pan Dabao) Haliotis discussion is an important economic shellfish in the north coast of China, and large-scale artificial breeding has been carried out; Haliotis diversicolor is an important economic shellfish in the southeast coast of China. [1] 
