Oysters are fixed by adhering their shells to other objects. Generally distributed in intertidal zone and subtidal zone, the water depth does not exceed10m. At the same time, it is also one of the most resistant aquatic animals. In the past 200 million years, the changing intertidal environment has trained oysters to have strong resistance to temperature, salinity, common pathogens in the open air and sea.

When the tide comes out, it can endure the hot and dry weather in summer and successfully adapt to the freezing weather in winter. It can survive 1~2 weeks or even 1 month when exposed to air without water.

Extended data:

Oyster is rich in taurine, which has obvious effects of protecting liver and benefiting gallbladder, and is also a good medicine for preventing and treating intrahepatic cholestasis of pregnancy. Rich trace elements and sugar are beneficial to promote fetal growth and development, correct anemia of pregnant women and restore their physical strength.

At the same time, oysters are the best food for calcium supplementation and are rich in phosphorus. Because calcium needs the help of phosphorus when it is absorbed by human body, it is beneficial to the absorption of calcium. Oysters also contain vitamin B 12 which is lacking in general foods. Cobalt in vitamin B 12 is an indispensable substance to prevent pernicious anemia, so oysters have active hematopoietic function.

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