Oysters and scallops have two shells, and abalone is a monocotyledonous mollusk with only one shell.

The two shells of scallop are symmetrical left and right, while the two shells of oyster are asymmetrical: generally speaking, the shell on the left is slightly larger and concave, and the shell on the right is slightly smaller and flat.

Scallops are usually brightly colored, while oysters and abalone shells are gray.

Second, the release status is different.

Scallops are distributed all over the world, from intertidal zone to deep sea.

Oysters are widely distributed in China and can be produced along the coast, especially at the junction of salt and fresh water.

Fish usually grow on the seabed with low water temperature, and their footprints are all over the Pacific Ocean, Atlantic Ocean and Indian Ocean.

Third, the value of medical care is different.

Scallop can strengthen the spleen and stomach, beautify and protect skin, and inhibit cancer and tumor. Scallops can effectively prevent cancer.

Oysters can lower cholesterol and improve sexual ability.

Abalone is rich in protein and has high nutritional value. Its shell can be used as medicine, which is called abalone in Chinese medicine.

Extended data

Oysters, also known as oysters, are the shells of seafood. Suitable for oyster culture in subtropical and tropical coastal areas, widely distributed in China. Oysters can be produced from the Yalu River in the north to the coast of Hainan Island in the south. Oysters are soft-shelled parasitic animals, especially those produced in the freshwater border of Yu Xian. Meat can be eaten and oyster sauce can be made. Meat, shell and oil can be used as medicine, also called oysters or oysters.

2. Scallop, a marine bivalve mollusk. There are about 50 genera and subgenera with more than 400 species. Global distribution, found in intertidal zone to deep sea. Scallop has two shells, almost equal in size, and the shell surface is generally purple brown, light brown, yellow brown, reddish brown, apricot yellow, gray white and so on.

3. Abalone is called fish, but it is not a fish. It is a primitive marine shellfish and single-shell mollusk. Because it is shaped like a human ear, it is also called "sea ear". Abalone usually grows on the seabed with low water temperature, and its footprints are all over the Pacific Ocean, Atlantic Ocean and Indian Ocean.

References:

Scallop _ Baidu Encyclopedia

Oyster _ Baidu encyclopedia

Abalone _ Baidu encyclopedia