Oysters have two shells, but these two shells are very different from those of scallops. The two shells of scallop are symmetrical left and right, while oysters are fixed on rocks or other objects with their left shells, so the sizes and shapes of the two shells are different: the left shell is slightly larger and concave, and the right shell is slightly smaller and flat.

The difference between oysters and scallops II. living environment

Scallop: Scallop is only distributed in the northern coast of China, living in the sea below the low tide line, with relatively fast water flow, high salinity and clear water quality. Inhabits on the hard seabed with a water depth of 10 ~ 30 meters, and adheres to rocks, shells or gravel with sufficient silk.

Oyster: Generally, it is grown or cultured in the place where rivers and seas blend, and it is half salty and half light on the shallow sea in the inner bay. Due to the restriction of suitable growth conditions, its quantity is less than other varieties, so its economic price is generally higher.

The difference between oysters and scallops. nutritive value

Although scallop contains zinc, its content is not as high as that of oyster. The content of zinc in oysters is as high as 9.39mg. In addition, oysters are rich in taurine, which has obvious protective effects on liver and gallbladder, and is also a good medicine for preventing and treating intrahepatic cholestasis of pregnancy. Oysters also contain glycogen, which is conducive to promoting fetal growth and development, correcting anemia of pregnant women and restoring physical strength of pregnant women.