We have many A-Z keywords for this term.
Sea anemones are a group of marine, predatory animals of the order Actiniaria . They are named after the anemone , a terrestrial flowering plant, because of the colourful appearance of many. Sea anemones are classified in the phylum Cnidaria , class Anthozoa , subclass Hexacorallia . As cnidarians , sea anemones are related to corals , jellyfish , tube-dwelling anemones , and Hydra . Unlike jellyfish, sea anemones do not have a medusa stage in their life cycle.