Coralreefs thrive in the clear, shallow coastal waters of tropical seas.

珊瑚礁在热带海洋清澈的浅水海岸水域生长旺盛。

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It is bordered by the world's highest mountains, by deserts, and by tropical seas.

它的边境被世界上最高的山脉、沙漠和热带海洋所环绕。

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Orcas are found in all the world's oceans, from the frigid arctic and Antarctic to warm tropical seas.

从冰冻的北极海和南极海到温暖的热带海洋，世界各大洋中均有虎鲸。

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The plant would generate 10 megawatts of power by exploiting natural temperature variations in tropical seas, and unlike other renewable energy sources it would operate nonstop 24 hours per day, 365 days per year.

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