Oyster, also known as oyster, is suitable for oyster culture in subtropical and tropical coastal areas. They are widely distributed in China, ranging from the Yalu River in the north to the coastal areas of Hainan Island in the south.

The hard area of the seabed where oysters live is called oyster bed, which is located in deep or shallow seawater or salty estuary waters. Oysters live in the middle of intertidal zone.

Oysters are usually fixed on shallow sea objects or seaside rocks, and feed and breathe by opening and closing shells. As filter-feeding organisms, they mainly feed on micro zooplankton, diatoms and organic debris. Oysters generate airflow in water by vibrating cilia on gills, water enters gills, and suspended particles in water are stuck by mucus. Cilia and tentacles on cheeks classify particles according to their size. Then the small particles are sent to the mouth and the big particles are sent to the sleeves.