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象陆地一样,海洋生产力的面积分布是不均衡的,而且生产力很小的那部份区域占50％以上的水域。照例,海洋生产的区域位于直接同岸相近地具有丰富营养盐的大陆架,浮游动物和浮游植物在这里大量繁殖,吸引着构成扑捞群体的鱼群。1976年世界海洋扑获6312万吨的鱼娄和非鱼类对象,其中大陆架为5788万吨,占世界海洋渔业产量的92％,大陆坡为267万吨,占4％,大洋上层为257万吨,占4％。
Like land, the distribution of marine productivity is unevenly distributed, and the less productive part of the area accounts for more than 50% of the waters. As usual, the area of marine production is located on the shelf, which is rich in nutrients directly adjacent to the shoreline, and zooplankton and phytoplankton multiply here, attracting fish stocks that make up the fishing fleet. In 1976, the world’s oceans caught 63.12 million tons of fish Lou and non-fish objects, of which the continental shelf was 57.88 million tons, accounting for 92% of the world’s marine fishery production, the continental slope was 2.67 million tons, accounting for 4% and the upper ocean was 25.7 million Ton, accounting for 4%.