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海洋占地球表面的71％,生活着20多万种生物,生物量以亿万吨级计;在保持海洋生态平衡的条件下,每年可为人类转化30亿吨水产食品,人均可达560公斤。但是进入90年代以来,海洋渔获量逐年减少,鳕鱼、比目鱼产量下降,带鱼、黄鱼前景不妙,有2/5的野生鱼捕捞已达极限,1/4已捕捞过量。渔业资源纠纷迭起,各国为捕捞限额争吵不休,远洋渔船争斗也时有发生。单纯
The ocean accounts for 71% of the earth’s surface. It lives more than 200,000 species of organisms and its biomass is measured in billions of tons. It can convert 3 billion tons of aquatic food for humans every year while maintaining the balance of marine ecology. The per capita can reach 560 kilograms. . However, since the 1990s, the amount of marine catches has been decreasing year by year, and the production of carp and flounder has fallen. The prospects for octopus and yellow croaker have been unfavourable. Two fifths of wild fish have reached their limit and one quarter have been overfished. Disputes on fishery resources have been raging. Countries have been arguing over fishing quotas, and ocean-going fishing boats have also been fighting. simple