Oyster, belonging to the family Ostreidae (true oyster) or clam family (Aviculidae pearl oyster), is a bivalve mollusk distributed in the coastal waters of temperate and tropical oceans.

Animals of the genus Spondylus and Anomia are sometimes called spiny oysters and saddle oysters respectively.

Scallop is the name for the bivalve mollusk of the genus Scallopus, with about 400 species.

More than 60 species of this family are one of the important marine fishery resources around the world, and their shells, meat, and nacre have extremely high utilization value.

Many scallops are eaten as a delicacy.

The brightly colored scallops with radiating patterns are loved by collectors, and the patterns have been adopted as artworks.

Abalone has many meanings in modern Chinese.

The most commonly used one refers to a kind of primitive marine shellfish, which is a single-shell mollusk with only half a shell. The shell is thick, flat and wide. Abalone is a traditional precious food in China, ranking first among the four seafoods; in ancient times

, abalone is also used to refer to salted fish (see "Confucius Family Collection·Six Books").

In addition, in Internet language, "abalone" also has meanings such as automobile metal brake chucks.