英语听力：自然百科 大堡礁 堡礁内外(17)（在线收听）

Contrast that with this monster,a tiger shark.

相比于这些怪物,虎鲨。

Like the tiniest marine life,it too rises up from the ocean's depths,but, unlike the plankton, it's planning to stay a while.

像最小的海洋生物一样，它也同样来自大海深处，但是不同于浮游生物，它只打算在这呆一会。

Tiger sharks travel over 800km to reach Raine Island,and each year they show up at exactly the same time,the time when turtles are nesting.

虎鲨游了800公里到达雷恩岛，每年它们都在同样的时间出现，也就是海龟筑巢的时候。

Turtles trapped in rock pools begin to refloat on the incoming tide.

那些被困在岩石间水池的海龟开始随着到来的潮水再次浮起。

For some, it's a second chance.

对与一些海龟而言这是第二次机会。

Now all this female must do is cross the lagoon to reach the reef edge and the safety of the open ocean.

现在所有这些雌性海龟必须做的是穿过环礁湖到达珊瑚礁边缘和安全的大洋。

But swimming in with the incoming tide is her number-one predator.

但是跟随潮水一起到来的还有它的头号捕食者。

It's crossed the reef and is heading towards the beach.

它穿过珊瑚礁朝着海滩游来。