珊瑚为什么这样美？

in cn •  4 days ago 

珊瑚是由一种称为珊瑚虫的身体柔软的小动物大量群居而形成的。珊瑚虫从芽体中生长，能通过向海水中排卵进行繁殖。珊瑚虫以漂浮在水中的其他动物的幼虫或小动物为食。鹿角珊瑚比较容易破碎，因此常生长在珊瑚礁中有保护屏障的地方。可以构成珊瑚礁的物种必须生活在明亮、温暖、清洁的水中。随着它们的成长死亡， 这些珊瑚的硬壳不断堆积，最后形成珊瑚礁。

cn
4 days ago by

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      ·  4 days ago 

    You've got a free upvote from witness fuli.
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