With man taking 70 million tons of fish and marine products each year from the sea, the threat of overfishing has become a real one.
在大海裡養魚的點子，有個嚴肅的前題：目前人類每年自海洋中獲得的七千萬噸漁產，百分之九十由漁撈方式而來。近年來，我國養殖業發達，以去年的海產收穫情形而言，養殖產品已經佔了四分之一，達到廿五萬公噸。