coral
Corals are marine invertebrates belonging to the class Anthozoa of the phylum Cnidaria. Typically, many identical polyps live in dense colonies. Corals contain important reef producers in tropical oceans that secrete calcium carbonate to form a hard skeleton.
The following tags are aliased to this tag: corals (learn more).
珊瑚是海洋无脊椎动物，属于刺胞动物门珊瑚虫纲。通常，许多相同的息肉生活在密集的群体中。珊瑚是热带海洋中重要的珊瑚礁生产者，它们分泌碳酸钙以形成坚硬的骨骼。