产于新疆吐鲁番地区的一种放射状群体珊瑚化石的花纹独特，颜色多种，具有很高的宝石学价值。
The radiated colony coral fossils with distinctive patterns and colours from Turpan, Xinjiang, is of highly gemmological value.
它们清除触须是适应于攻击附近的珊瑚和保护群体。
Their sweeping tentacles are adapted to attack nearby corals and to protect the colony.
甚至少女鱼杀死鹿角珊瑚一部分群体后，剩余的部分仍然能存活。
Even after damselfish killed off parts of the staghorn colonies, the areas that remained were able to survive.
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