Corals can be found here, but lack the  photosynthetic symbiotes of their tropical sunlit cousins.

可以在这里找到，但缺乏热带阳照射的表亲的生体。

Another concern is the bleaching of coral reefs, where the corals expel their plant symbiotes, losing their colour, and eventually dying.

另一个人担忧的问题是礁的白化，排出它们的植物生体，失去颜色， 最终死亡。

Other types of coral that do not  have the plant symbiotes, however, do exist in deeper waters, or colder seas as  far from the equator as Scotland, but are rarer.

然而， 其他类型的没有植物生体，确实存在于更深的水域，或者远离赤道的较冷海域， 如苏格兰，但较为罕见。