据估计,地球上80%的生物资源在海洋中。有人计算过,在不破坏生态平衡的条件下,海洋每年可提供30亿t水产品,能够养活300亿人口。在海洋水产品中,人们吃得最多的是鱼类。全世界有鱼类2万多种,中国海域约有2 000种。世界渔场大都分布在大陆架。 It is estimated that 80% of the Earth’s biological resources are in the ocean. Someone has calculated that without breaking the ecological balance, the oceans can provide 3 billion tons of aquatic products every year and can feed 30 billion people. Among the marine aquatic products, the most commonly eaten fish are fish. There are more than 20,000 species of fish in the world and about 2,000 in China’s sea area. Most of the world’s fisheries are distributed on the continental shelf.