水螅虫是生活在溪水中的一种腔肠动物,身体呈细筒状,一端封闭,用以附着在其他物体上,另一端顶端有口,口周有5-6条触手,捕食小型甲壳动物和鱼苗。
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。
Actually, the term coral is much broader and refers to most of the animals in the class Hydrozoa of the Phylum Cnidaria.
属于水生珊瑚虫类的多种集群海生水螅虫的任何一种,其有石灰石结构,类似真正的珊瑚。
Any of various colonial Marine hydrozoans of the order Hydrocorallinae, having a limestone skeleton and thus resembling the true corals.
水螅型珊瑚虫,水螅虫一种有柱状身体和通常被触角包围的口部开口的腔肠动物,比如水螅或珊瑚虫。
A coelenterate, such AS a hydra or coral, having a cylindrical body and an oral opening usually surrounded by tentacles.
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