On the surface of this sea fan, there are two polyps that are not polyps.

在这株海扇上，有2只瑚不像瑚。

It is textured to allow coral polyps to attach.

质地适合瑚附着。

The polyps then form the larger structure of a reef.

这些瑚之后便形成了大型的瑚礁。

Polyps spend their lives filtering microscopic particles in the clear waters.

瑚不停地过滤着清澈海水中的细微粒子。

The polyps that make up the stony corals are among the winners of climate change.

构成石瑚的瑚是气候变化的赢家之。

Coral is made up of small colonial animals, with calcium carbonate skeletons.

瑚是由小型瑚及其碳酸钙骨骼聚集而成的。

They do this so that they can eat the coral polyps and algae inside.

这样它们就能吃到瑚面的海藻了。

They're a symbiotic duo, a partnership, between an algae and a coral.

瑚是共生体，是海藻瑚之间的合作关系。

A small piece of coral may be made of hundreds of polyps.

小片瑚可能都是由上百个瑚构成的。

Over time, these polyps generate rock-like skeletons made of calcium carbonate.

逐渐地，这些瑚长出形似石头，由碳酸钙组成的骨架。

Again, what we're seeing here is blue light hitting this image.

我们这所看到的是，蓝色 光照在瑚的图像 。

At the heart of reef ecosystems lies a symbiosis between corals and algae.

瑚礁生态系统的核心是瑚藻类的共生关系。

First, tiny creatures, just a few millimetres in length, called polyps.

第种，是种微小的生物，只有几毫米长称为瑚。

This tight-knit bond between algae and corals is what makes reefs so incredibly productive.

藻类瑚之间的这种紧联系，就是瑚礁生产力如此惊人的原因所在。

And these use light to generate energy, and that energy is then transferred to the coral animal host.

这些藻类用光产生能量，之后能量被转移到瑚宿主身上。

Reefs are the hard skeletons left at the bottom of the sea by small marine creatures called polyps.

而礁石则是瑚这种小型海洋生物遗留在海底的坚硬的骨架。

The answer is starfish. The crown-of-thorns starfish preys on coral and large outbreaks of these starfish can devastate reefs.

正确答案是海星。棘冠星鱼会捕食瑚，大量的海星会摧毁瑚。

Together, colonies of polyps produce large three-dimensional structures, which form the basis of an underwater metropolis.

成群的瑚起制造出立体的结构，就有了水下都市的基础。

Pip saw the multitudinous, God-omnipresent, coral insects, that out of the firmament of waters heaved the colossal orbs.

皮普看见了无数上帝般无所不在的瑚，从水的天穹中升起的巨大星体。

Polyps look a bit like underwater flowers, using their tentacles to catch and eat zooplankton.

瑚看起来有点像水中花，它们用触手来捕食浮游生物。