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地球表面海洋面积辽阔,大约为3.6亿多平方里,占地球表面积的70.8%,它储存有13.7亿立方公里的海水。如果别的星球上有人能用高倍望远镜观测地球的话,他们一定会说,地球是一个水的世界。地球上原始的生命最早是在海洋里发生的,海洋中,适于生命存在的空间,比陆地和淡水所有的生活空间要大300倍,而且环境往往比陆地上许多地区更有利于生物的繁殖。许多海洋生物可以直接作为人类的食料,还有许多可以用来饲养牲畜和家禽。如能把海水养殖事业发展起来,那就可以得到更多的食料。
The surface of the Earth has a vast ocean area, which is approximately 360 million square miles, accounting for 70.8% of the Earth’s surface area. It stores 1.37 billion cubic kilometers of seawater. If someone on the other planet can use the high-powered telescope to observe the Earth, they will certainly say that the earth is a water world. The primitive life on Earth first occurred in the ocean. In the ocean, the space suitable for life exists 300 times more than the living space of land and fresh water, and the environment is often more conducive to the reproduction of organisms than many areas on land. . Many marine life can be directly used as food for humans, and many can be used to raise livestock and poultry. If you can develop mariculture, you can get more food.