浙江省上虞市地处杭州湾南岸,海岸线长48km,近海为咸淡水水域,常年海水盐度在7‰～15‰,pH为8．0～8．5,4月～10月的平均水温在于24℃左右,很适宜于近海生物资源的生活和生长,所以近海滩涂生物资源十分丰富。不仅有大量的锯缘青蟹、白玉蟹、脊尾白虾等甲壳类,而且鲻(梭)鱼、梅 Shangyu City, Zhejiang Province is located in the southern bank of Hangzhou Bay, the coastline of 48km long, the sea is brackish freshwater waters, perennial salinity of 7 ‰ ~ 15 ‰, pH 8. 0 ~ 8. 5, April to October average water temperature is About 24 ℃, it is suitable for the living and growth of offshore living resources, so the coastal beach biological resources are very rich. Not only a large number of blue-eyed crab, white crabs, spiny white shrimp and other crustaceans, but also 鲻 (shuttle) fish, plum