A study published in the December 2009 Ecological Applications shows that keeping more fish in the sea may give an ecosystem some protection against unwanted algae.

在2009年12月号生态学应用杂志上发表的一项研究显示海中鱼类增多可保护生态系统不受讨厌的海藻污染。

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Because countless ecological opportunities remained for fish underwater, plenty of them remained aquatic.

因为海底的生态环境仍然为水族提供了无尽的生存机会，所以很多鱼仍然是水栖动物。

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Here is an excellent ecological environment, the mountains of tea oil, tea, chestnut, mountain vegetables, shrimps and crabs wa Fish and turtle ter are all pure natural green food.

这里的生态环境优良，山中的茶油、茶叶、板栗、山野菜，水里的鱼鳖虾蟹，都是纯天然的绿色食品。

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They also provide a habitat for fish and other species of ecological and commercial interest, such as orange roughy, swordfish, tuna, sharks, turtles and whales.

UNESCO: MEDIA SERVICES