The bleaching caused the corals to lose their zooxanthellae.

白化导致珊瑚失去了它们虫。

If they do not recover their zooxanthellae, they will die.

如果它们回自己虫，它们就会死。

When the coral is stressed, the zooxanthellae die back.

珊瑚受到压迫会导致萎缩。

Here corals get most of their colour from the microscopic algae that live inside their tissues, the zooxanthellae.

这里珊瑚颜色大都来自只通过显微镜才看到类，这种类生长珊瑚组织--中。

When tropical waters get too warm, it destroys the delicate, symbiotic relationship between coral and microscopic algae called zooxanthellae.

当热带水域温度过高时，会破坏珊瑚与虫这种微小类间互利共生微妙关系。

Warm-water corals maintain a symbiotic  relationship with microscopic algae called zooxanthellae.

温水珊瑚与称为虫微观类保持着共生关系。

They have the same zooxanthellae that we saw within the corals.

它们具有与我们珊瑚中看到相同虫。

Healthy, unbleached corals rely on their algae, known as zooxanthellae to absorb some sunlight.

健康、未漂白珊瑚依靠它们类（称为虫）吸收一些阳光。

To get the energy and nutrients they need to grow, the polyps team up with algae called zooxanthellae.

为了获得生长所需量和营养，水螅体与称为虫类合作。

With the help of zooxanthellae, corals build rigid exoskeletons in dynamic formations, which  create a coral reef's three-dimensional structure.

虫帮助下，珊瑚动态地层中构建刚性外骨骼，从而形成珊瑚礁三维结构。

Corals are able to photosynthesize because of a special partnership, a symbiosis that they havewith a single-celled algae called zooxanthellae.

珊瑚之所以够进行光合作用，是因为它们与一种叫做虫单细胞类有一种特殊伙伴关系。

So this is a micrograph, a microscopic photograph I've taken, of some zooxanthellae from the tentacleof the upside-down jellyfish Cassiopeia.

所以这是一张显微照片， 我拍一张显微照片，是倒置水母仙后座触须中一些虫。

This is an organism that, just like the corals we were talking about, has these zooxanthellae inside of them and can photosynthesize.

这是一种生物， 就像我们正谈论珊瑚一样，它们体内有这些虫并且可以进行光合作用。

And some of these nudibranchs that do thatare able to take those zooxanthellae that we were talking about earlier, put them inside of their own cells, and then they become photosynthetic.

一些这样做裸鳃类动物够吸收我们之前谈到那些虫，将它们放入自己细胞内，然后它们就会进行光合作用。