Ehrenberg, 1838
With contractile stalk; colonial except in two genera (Haplocaulus, Vorticella); zooids not independently contractile among colonial forms (except in Carchesium); all species attached to inanimate objects or plants, rotifers, crustaceans, turtles and others; in various freshwater and marine habitats.
Planctonic species recorded:
Vorticella oceanica
Zoothamnium elegans