Except for a few species, most of them live in shallow waters ranging from low tide zone to hundreds of meters, cling to or live freely, and mainly feed on ephemera algae. Are seafood, widely distributed in the world's oceans.
2.oysters
Global distribution. China is rich in oyster resources, which is the hometown of oysters and has a long history of using oysters. As early as more than 2,000 years ago, residents in some areas along the southern coast of China mastered oyster culture technology. At present, there are oyster production bases in Bohai Sea, Yellow Sea, East China Sea and South China Sea, and the main producing areas are Fujian, Guangdong, Shandong, Guangxi, Liaoning and Zhejiang. Among them, oyster is the most important breed.
3. Stichopus japonicus
I like living under rocks or seaweed and doing slow exercise. Have the habit of sleeping in summer. When the water temperature is too high or turbid, the internal organs are often discharged from the anus. If the environment is suitable, it can be regenerated in about 2 months. Dalian in the north of China and Shandong coastal areas are prolific. Made of dried products, it is a precious sea treasure.
4. Silt
Traditional cultured shellfish in China. It is distributed in coastal areas of China, and the spawning period is from August to 65438+ 10. In addition, Hebei, Shandong, Zhejiang, Fujian and Guangdong all carry out artificial breeding, and the output is quite rich. The meat of Meretrix meretrix is delicious. It can be eaten fresh, dipped in wine or made into dried products. The meat of Meretrix meretrix contains a lot of protein and vitamins. The blood of Meretrix meretrix is bright red, and there is a gold thread on the edge of the meat.
5. Sorry
Kun Kun's two water pipes are very developed. It relies entirely on these two water pipes to keep in touch with the seawater on the beach, suck in food and fresh seawater from the water inlet pipe, and discharge waste and sewage from the drainage pipe. SINONOVACULA constricta lives by digging holes in soft mud beach, and its latent depth changes with the seasons: it is warm and shallow in summer; It's cold in winter and it lurks deep. Usually, the latent depth is about 5 ~ 6 times of the body length, and the deepest can reach 40 cm, which is about 10 times of the body length.
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