Eating rocks is just one way parrotfish help manage seaweed.

吃石头只是鹦鹉打理海藻的一种方式。

You hear the sound of the parrotfish, like the noise of the waves.

你可以听到鹦鹉的声音，就像海浪似的。

Can you guess what parrotfish and beaches have to do with each other?

你能猜到鹦嘴和沙滩有然的干系吗？

Through a dynamic system of social networks, parrotfish can convey information to other coral-dwelling fish.

通过一个动态社交网，鹦鹉能向其他珊瑚居民传递信息。

There is nobody talking. You hear the sound of the parrotfish, like the noise of the waves.

你在水下。没有人说。你听到鹦嘴的声音，就像海浪的声音。

The parrotfish that remain live in much smaller communities.

幸存的鹦鹉只得生活在更小的群落里。

Then the parrotfish has to get rid of all of the crushed limestone—and there's only one way to do that.

然后鹦嘴理掉所有碎的石灰石，而它们只有一种理方式。

But unlike their neighbors, parrotfish can completely remove even the tiniest scraps of seaweed from the ocean floor.

但它和它邻居不一样的是，鹦鹉能够从海床上完全移除海藻，甚至是其最小的残渣。

Parrotfish, for example, favor the brute force approach.

例如，鹦嘴喜欢采用暴力方法。

Okay, so what does a parrotfish look like?

好的，那么鹦嘴长什么样子呢？

Hundreds of butterflyfish, parrotfish, and seahorses darted around her.

数百条蝴蝶、鹦嘴和海马在她周围游来游去。

The lionfish's menu includes herbivores that eat algae, like parrotfish or surgeonfish.

狮子的食物包括以藻类为食的食草动物，例如鹦嘴和刺尾。

This is where parrotfish come in.

这就是鹦鹉上场的时刻了。

Named for their vibrant scales and beak-like teeth, these parrotfish are devouring a particularly crunchy breakfast: rocks.

以他们鲜明的鳞片与喙状齿闻名，这群鹦鹉在忙着吃一种特别脆的早餐：石头。

A single parrotfish can produce over 380 kilograms of this pulverized coral each year.

一条鹦鹉每年可以产生超过380公斤的这种粉碎后的珊瑚。

And there just aren't enough herbivores like parrotfish left out on the reefs to mow it all down.

而且，珊瑚礁上剩下的像鹦鹉这样的植食性生物已经不够多了，无法把所有的藻类都吃掉。

In many coral reefs, overfishing has reduced the number of parrotfish, as well as other seaweed eaters, such as surgeonfish and rabbitfish.

很多珊瑚礁中，过度捕捞减少了鹦鹉的数量，以及其他吃海藻的，例如，刺尾和蓝子。

Parrotfish are a distinctive family of fish species with a tough, bony beak so strong that they can bite through rock and coral!

鹦嘴是一类独特的硬骨，骨喙的强度足以它们咬碎岩石和珊瑚。

So next time you're lounging on a tropical white-sand beach, maybe think of parrotfish.

所以下次你在热带白沙滩上悠闲地晒太阳时，也许可以想想鹦鹉。

[Jo] Yeah, it sounds kind of slimy; not something I want to sleep in. But parrotfish like it really well.

但是鹦嘴真的很喜欢它。