black coral

名词 n.
中文释义

英文释义

名词 n.
  1. Any of various tropical corals of the family Antipathidae.

词形变化

black corals plural

词源

From the black colouration of their skeletons of the corals, made of chitin; unlike shallow-water corals which use calcium carbonate to build white skeletons, evident during coral bleaching events which reveal the colour of the skeletons, due to the transparent corals expelling their colourful algae symbionts.
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