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Of all the formations in the Pacific,

在太平洋里所以的构造中

these reefs are by far the richest in life

这些礁石是最富有生命力的

There are hundreds of different kinds of coral

那里有着成百上千的不同种类的珊瑚

And all are made up of millions of tiny creatures called polyps,

全部由数以万计的微小生物构成，叫做珊瑚虫

each covered in a hard skeleton

每一个都被坚固的骨架包裹着

Reefs are home to thousands of specialists,

礁石是千千万万的专化物种的家

like these razorfish that blend into the staghorn coral around them

就像这些离鳍鱼，它们融入到了鹿角珊瑚里

But not all animals here need to blend in

但不是所以的动物在这里都要隐藏起来

Grey reef sharks

灰礁鲨

The reef's top predators,

礁石群里的顶级捕食者

these sharks patrol the waters on strong currents

这些鲨鱼在逆流中巡视着水域

But without all the life on the reef here,

如果没有珊瑚里的这些生命

they could never exist in such numbers

它们可不会以如此庞大的数量生存下来

They may be idle right now,

他们也许现在无所事事

but they won't remain this way for long

但是它们不会一直这样

As night falls, it's feeding time

夜幕降临，猎杀时刻

Needlefish stalk the coral shallows in search of food

颌针鱼潜行在珊瑚丛的阴影处，寻找食物

Predators by day, at night they become the prey

白天是“刀俎”，晚上是“鱼肉”

Speeding away at 20 miles an hour,

以每小时20英里高速前行

the needlefish give the chasing sharks a run for their money

颌针鱼让追逐的鲨鱼竞争激烈

But it's hard to escape from so many

但是也很难从那么多鲨鱼中逃脱出来

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