Anthozoa

This term is a technical taxonomic classification used primarily in marine biology and zoology. It describes a specific group of organisms that remain in the polyp stage throughout their entire existence, distinguishing them from other cnidarians that alternate between polyp and medusa forms.

As a taxonomic class name, the word functions as a collective noun. In scientific literature, it is treated as a singular entity when referring to the class as a whole, though it refers to a diverse group of animals including both stony corals and sea anemones.