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

像珊一样它们是海洋托儿所。

Coral reefs are already appreciated for their beauty.

珊绚丽外表已备受赞赏。

Unfortunately, the coral reef ecosystem is a fragile one.

不幸是，珊是一种脆弱生态系统。

Below the waves, coral reefs provide a habitat for teeming life, a life with a kaleidoscope of color.

波涛之下生长着珊，为无数生命提供了栖息境，让它们生活五彩缤纷。

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

若要全面考虑话，有些人认为应该把塔转成珊。

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壮丽景色，那里点缀着五颜六色鱼类和珊。

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

接下来，我们来谈谈珊吧。我名字Carl？当然不是，是珊，具体来说是珊。

There are a number of threats to the health of coral reefs.

珊健康饱受威胁。

The archipelago is celebrated for its rich marine life and underwater coral reefs.

这个群岛以其丰富海洋生物和水下珊而闻名。

Healthy coral reefs are essential to a healthy marine ecosystem.

健康珊对健康海洋生态系统至关重要。

Let's go back to the coral reefs.

我们再回到珊例子上。

The healthy reef sounds that you just heard can be used to regenerate coral reefs.

你刚听到健康珊声音可以用于再生珊。

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

我们对珊几乎所有了解都来自水下30米左右地方。

Despite its name, the Great Barrier Reef isn't just one large coral reef.

尽管名字叫大堡，但它并不仅仅是一个大型珊。

Though small in size, it's one of the most instantly recognizable inhabitants of the world's coral reefs.

尽管它们体型很小，他们是全世界所有珊中最易识别生物。

He wanted to tell people about what was happening to the coral reef.

他想告诉人们珊发生了什么。

The coral reef in Arecibo is part of the beach.

阿雷西博珊是海滩一部分。

Oyster reefs provide much the same function as coral reefs.

牡蛎提供了与珊相同功能。

They are the underpinning of the ecological systems where they exist, just like coral reefs.

它们是生态系统支柱，就像珊一样。

This has led to unchecked seaweed growth, which threatens to degrade entire coral reefs.

这导致了海藻过量生长，威胁到了整个珊生存。