Comb Jellies

Moon jelly, (genus Aurelia), genus of marine jellyfish of the order Semaeostomeae (class Scyphozoa, phylum Cnidaria) characterized by their pale translucent bodies and commonly found in coastal waters,...

Sea anemone, any member of the invertebrate order Actiniaria (class Anthozoa, phylum Cnidaria), soft-bodied, primarily sedentary marine animals resembling flowers. They are found from the tidal zone of...

Hydra, genus of invertebrate freshwater animals of the class Hydrozoa (phylum Cnidaria). The body of such an organism consists of a thin, usually translucent tube that measures up to about 30 millimetres...

Portuguese man-of-war, (Physalia physalis), species of jellylike marine animals of the order Siphonophora (class Hydrozoa, phylum Cnidaria) noted for its colonial body, floating habits, and powerful stings....