The great barrier reef is the world's largest network of coral structures.

大堡礁世界最大的珊瑚礁群。

Like coral reefs, they are a nursery for the oceans.

像珊瑚礁一样它们海洋的托儿所。

Coral reefs are already appreciated for their beauty.

珊瑚礁绚丽的外表已备受赞赏。

The reefs and rough waters made it difficult for ship captains.

珊瑚礁和汹涌的海水使船长难以驾驭。

But when reefs are bleached or damaged, the fish flee, and the reef suffers.

但当珊瑚礁白化或受损后，鱼群会逃走，礁石也会遭受破坏。

Unfortunately, the coral reef ecosystem is a fragile one.

不幸的，珊瑚礁一种弱的生态系统。

Far better, some say, to turn old rigs into coral reefs.

若要全面考虑的话，有些人认为应该把老的钻塔转换成珊瑚礁。

One of the more interesting mollusks to be found in the reefs is the giant clam.

在珊瑚礁内能找到的有趣的软体动物之一就蛤蚌。

Both offer stunning views of tropical waters dotted with colourful fish and coral reefs.

这两地都可以欣赏到热带水域的壮丽景色，那里点缀着五颜六色的鱼类和珊瑚礁。

They help to (inaudible) and create reefs.

它们帮助形成(听不见的)珊瑚礁。

Next, we're talking about coral, Carl? No, coral, specifically coral reefs.

接下来，我们来谈谈珊瑚吧。我的名字Carl？当然不，珊瑚，具体来说珊瑚礁。

Shout out today goes out to Coral Reef High School.

今天要大声喊出的名字珊瑚礁高中。

They can hear the sounds of healthy reefs.

它们可以听到健康珊瑚礁的声音。

Some corals take hundreds of years to regrow.

而珊瑚礁往往要数百年才能再生。

In which nation would you find the Ningaloo Reef?

你能在以下哪个找到宁格罗珊瑚礁？

Almost everything we know about coral reefs comes from the top 30 meters or so.

我们对珊瑚礁的几乎所有了解都来自水下30米左右的地方。

We now know that because of that effort, our reefs are more resilient.

我们现在知道，由于这些努力，我们的珊瑚礁更有适应力。

The reef is located in what's called an oceanic twilight zone.

此珊瑚礁位于所谓的海洋曙光区。

Beaches that have been mined to become barren pits, reefs and fish populations are killed.

被开采的海滩变成了贫瘠的坑，珊瑚礁和鱼类种群都被杀死了。

The surfers are happy they saved the reef.

冲浪者们很高兴他们拯救了珊瑚礁。