地球表面积的百分之七十一是海洋,海洋蕴藏着无数量的生物资源,据估计,海洋中生物资源占地球上生物资源总量的百分之八十。自六十年代以来,世界上出现了开发海洋热,许多沿海国家把开发海洋定为一项国策。海洋经济发展也十分迅速。1969年世界海洋产值为130亿美元,1980年已超过2500 Seventy-one percent of the Earth’s surface area is the oceans, which contain an immense amount of biological resources. It is estimated that the marine biological resources account for 80% of the total biological resources on the planet. Since the 1960s, there has been the development of oceanic heat in the world, and many coastal countries have made the development of the sea a national policy. The development of marine economy is also very rapid. In 1969, the world’s marine output value was 13 billion U.S. dollars and in 1980 it exceeded 2,500