EVERYDAY SCIENCE

Detailed explanation-1: -The class Anthozoa (under the phylum Cnidaria) includes corals, anemones, sea pens and seafans. Anthozoa consists of 10 orders and thousands of species. Adults are attached to the seabed, but their larvae are free-floating and can drift to new settlements.

Detailed explanation-2: -Mostly marine animals, the cnidarians include the corals, hydras, jellyfish, Portuguese men-of-war, sea anemones, sea pens, sea whips, and sea fans. The phylum Cnidaria is made up of four classes: Hydrozoa (hydrozoans); Scyphozoa (scyphozoans); Anthozoa (anthozoans); and Cubozoa (cubozoans).

Detailed explanation-3: -Sea anemones are ocean-dwelling members of the phylum Cnidaria. They are invertebrates belonging to the class of Anthozoa.

Detailed explanation-4: -Subclass Hexacorallia (= Zoantharia) of cnidarian class Anthozoa currently contains six orders: Actiniaria (sea anemones), Antipatharia (black corals), Ceriantharia (tube anemones), Scleractinia (stony corals), Corallimorpharia (corallimorpharians), and Zoanthidea (zoanthids).

Detailed explanation-5: -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.