It is a common marine shellfish that is loved by people for its delicious meat and rich nutritional value. Shells are wedge-shaped, with a black brown surface and a gray blue interior, giving them a pearl like luster. Usually inhabiting coastal rocks, especially in areas with rapid seawater currents and clear water quality. It has strong resistance to adverse environments such as red tide and sewage, and mainly feeds on organic debris and diatoms. The reproductive ability is strong, and female clams can lay up to 25 million eggs. Strong vitality and easy to cultivate artificially. In terms of consumption, the meat is delicious, rich in protein, essential amino acids, vitamins, and minerals, and is known as the egg of the sea.