Actually, the term coral is much broader and refers to most of the animals in the class Hydrozoa of the Phylum Cnidaria.

其实珊瑚一词所指的动物甚多，包括大多数属珊瑚虫纲及数动属水螅虫纲的刺胞动物。

youdao

Actually, the term coral is much broader and refers to most of the animals in the class Hydrozoa of the Phylum Cnidaria.

其实珊瑚一词所指的动物甚多，包括大多数属珊瑚虫纲及数动属水螅虫纲的刺胞动物。

youdao