Marine light bulbs;

船用灯具灯泡；

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Whales and other Marine mammals, fish, and even some invertebrates depend on sound, which travels much farther in water than light does.

鲸鱼和其他海洋哺乳动物，鱼类甚至一些无脊椎动物依靠声音，声音在水中传播要比光快。

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Those other mammalian Marine predators, the dolphins, use sound to "see" in places where little light penetrates.

而另一类哺乳类海洋掠食物种——海豚——则是使用声音去“察看”那些几乎没有光线照射到的地方。

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