adj. actinozoan
misc. anthozoic
珊瑚其实是珊瑚虫的外骨骼。
数十亿被称为珊瑚虫的微小生物组成及够造出这种珊瑚结构。
This reef structure is composed of and built by billions of tiny organisms, known as coralpolyps.
珊瑚岩是一种细小无害，蛇状，叫作珊瑚虫的生物的排泄物，外形像海绵。
The excretion of a small, harmless, snake-shaped creature known as the coral grubb, coralite is spongelike in appearance.
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