Appendix: Classification

Class Anthozoa

Subclass Octocorallia (or Alcyonaria)

• Order Stolonifera (organ-pipe coral and tree fern coral)
• Order Telestacea (Telesto)
• Order Alcyonacea (soft corals such as leather corals and tree corals)
• Order Coenothecalia (Indo-Pacific blue coral)
• Order Gorgonacea (gorgonian corals including sea fans, red coral, sea whips, and sea feathers)
• Order Pennatulacea (sea pens and sea pansies)

Subclass Zoantharia

• Order Zoanthidea (anemonelike anthozoans)
• Order Actiniaria (sea anemones)
• Order Scleractinia or Madreporaria (reef-building corals such as star corals, brain corals, staghorn corals, mushroom corals, and bubble corals)
• Order Rugosa or Tetracoralla (extinct solitary corals)
• Order Corallimorpharia (resemble true corals but lack skeletons)
• Order Ceriantharia (anemonelike anthozoans)
• Order Antipatharia (black corals)

Subclass Tabulata (extinct colonial anthozoans)