Tags: Crustacean.
Harpacticoida is an order of copepods in the subphylum Crustacea. This order comprises 463 genera and about 3000 species; its members are benthic copepods found throughout the world in the marine environment (most families) and in fresh water (essentially the Ameiridae Parastenocarididae and the Canthocamptidae). A few of them are planktonic or live in association with other organisms. Harpacticoida represents the second-largest meiofaunal group in marine sediment milieu after nematodes.
