class hydrozoa การใช้

"' Candelabridae "'is a small family of cnidarians within the class Hydrozoa.
Fire corals are not true corals, being in the order Anthomedusa ( sometimes known as Anthoathecata ) of the class Hydrozoa.
These so-called " ferns " are dead and dried colonies of hydrozoans, colonies of class Hydrozoa, phylum Cnidaria.
In the class Hydrozoa, the polyps are indeed often very simple, like the common little fresh water species of the genus " mesenteries.
Campanulariidae is composed entirely of hydroids, a Greek term meaning " water animals " applied to the plant-like polyp colonies of the class Hydrozoa.