Ord. Sea anemone, Actiniaria Rubund Creative Commons Attribution ShareAlike.	Ord. Scleractinia "Reef0871" by NOAA Photo Library via Flickr, Creative Commons Attribution.
Ord. Alcyonacea Rubund Creative Commons Attribution ShareAlike.

Taxonomy:

Ord. Penicilaria (Add)

Fam. Arachnactidae (Add)

Ord. Spirularia (Add)

Fam. Botrucnidiferidae (Add)
Fam. Cerianthidae (Add)

Ord. Sea anemone, Actiniaria

Endocoelantheae (Add)

Fam. Actinernidae (Add)
Fam. Halcuriidae (Add)

Nyantheae (Add)

Athenaria (Add)

Fam. Andresiidae (Add)
Fam. Andwakiidae (Add)
Fam. Edwardsiidae (Add)
Fam. Galatheanthemidae (Add)
Fam. Halcampidae (Add)
Fam. Halcampoididae (Add)
Fam. Haliactiidae (Add)
Fam. Haloclavidae (Add)
Fam. Limnactiniidae (Add)
Fam. Octineonidae (Add)

Boloceroidaria (Add)

Fam. Boloceroididae (Add)
Fam. Nevadneidae (Add)

Thenaria (Add)

Acontiaria (Add)

Fam. Acontiophoridae (Add)
Fam. Aiptasiidae (Add)
Fam. Aiptasiomorphidae (Add)
Fam. Antipodactidae (Add)
Fam. Bathyphelliidae (Add)
Fam. Diadumenidae (Add)
Fam. Haliplanellidae (Add)
Fam. Hormathiidae (Add)
Fam. Isophelliidae (Add)
Fam. Kadosactidae (Add)
Fam. Metridiidae
Fam. Nemanthidae (Add)
Fam. Sagartiidae (Add)
Fam. Sagartiomorphidae (Add)

Endomyaria (Add)

Fam. Actiniidae
Fam. Actinodendronidae (Add)
Fam. Aliciidae (Add)
Fam. Aurelianidae (Add)
Fam. Condylanthidae (Add)
Fam. Homostichanthidae (Add)
Fam. Iosactiidae (Add)
Fam. Liponematidae (Add)
Fam. Minyadidae (Add)
Fam. Phymanthidae (Add)
Fam. Stichodactylidae
Fam. Thalassianthidae (Add)

Mesomyaria (Add)

Fam. Actinoscyphiidae (Add)
Fam. Actinostolidae (Add)
Fam. Exocoelactiidae (Add)
Fam. Isanthidae (Add)

Protantheae (Add)

Fam. Gonactiniidae (Add)

Ptychodacteae (Add)

Fam. Preactiidae (Add)
Fam. Ptychodactiidae (Add)

Ord. Black coral, Antipatharia (Add)

Fam. Antipathidae (Add)
Fam. Cladopathidae (Add)
Gen. Hillopathes (Add)
Fam. Leiopathidae (Add)
Fam. Myriopathidae (Add)
Fam. Schizopathidae (Add)

Ord. Corallimorpharia (Add)

Fam. Actinodiscidae (Add)
Fam. Corallimorphidae (Add)
Fam. Discosomatidae
Fam. Ricordeidae (Add)
Fam. Sideractiidae (Add)

Ord. Scleractinia

Archaeocoeniina (Add)
Archaeofungiina (Add)
Astrocoeniina (Add)

Fam. Acroporidae (Add)
Fam. Astrocoeniidae (Add)
Fam. Pocilloporidae

Caryophylliina (Add)

Fam. Caryophylliidae

Fam. Flabellidae (Add)
Fam. Guyniidae (Add)
Fam. Stenocyathidae (Add)
Fam. Thecocyathidae (Add)
Fam. Turbinoliidae (Add)
Fam. Volzeioidea (Add)

Dendrophylliina (Add)

Fam. Dendrophylliidae

Distichophylliina (Add)
Faviina (Add)

Fam. Anthemiphylliidae (Add)
Fam. Faviidae (Add)
Fam. Lobophylliidae (Add)
Fam. Meandrinidae (Add)
Fam. Merulinidae (Add)
Fam. Montlivaltiidae (Add)
Fam. Mussidae
Fam. Oculinidae (Add)
Fam. Pectiniidae (Add)
Fam. Rhizangiidae (Add)
Fam. Trachyphylliidae (Add)

Fungiina (Add)

Fam. Agariciidae (Add)
Fam. Cyclolitidae (Add)
Fam. Fungiacyathidae (Add)
Fam. Fungiidae (Add)
Fam. Haplaraeidae (Add)
Fam. Micrabaciidae (Add)
Fam. Poritidae
Fam. Siderastreidae (Add)
Fam. Synastreidae (Add)
Fam. Thamnasteriidae (Add)

Pachythecalina (Add)
Stylina (Add)
Stylophylliina (Add)

Ord. Zoantharia

Fam. Abyssoanthidae (Add)
Fam. Epizoanthidae (Add)
Fam. Hydrozoanthidae (Add)
Fam. Neozoanthidae (Add)
Fam. Parazoanthidae
Fam. Sphenopidae (Add)
Fam. Zoanthidae (Add)

Ord. Alcyonacea

Fam. Acanthoaxiidae (Add)
Alcyoniina (Add)

Fam. Alcyoniidae (Add)
Fam. Nephtheidae (Add)
Fam. Nidaliidae (Add)
Fam. Paralcyoniidae (Add)
Fam. Xeniidae

Calcaxonia (Add)

Fam. Chrysogorgiidae (Add)
Fam. Ellisellidae (Add)
Fam. Ifalukellidae (Add)
Fam. Isididae (Add)
Fam. Primnoidae (Add)

Fam. Dendrobrachiidae (Add)
Holaxonia (Add)

Fam. Acanthogorgiidae (Add)
Fam. Gorgoniidae (Add)
Fam. Keroeididae (Add)
Fam. Plexauridae (Add)

Protoalcyonaria (Add)

Fam. Haimeidae (Add)
Fam. Taiaroidae (Add)

Scleraxonia (Add)

Fam. Anthothelidae (Add)
Fam. Briareidae (Add)
Fam. Coralliidae (Add)
Fam. Melithaeidae (Add)
Fam. Paragorgiidae (Add)
Fam. Parisididae (Add)
Fam. Subergorgiidae (Add)

Stolonifera (Add)

Fam. Acrossotidae (Add)
Fam. Clavulariidae (Add)
Fam. Coelogorgiidae (Add)
Fam. Cornulariidae (Add)
Fam. Pseudogorgiidae (Add)
Fam. Tubiporidae (Add)

Ord. Helioporacea (Add)

Fam. Helioporidae

Ord. Sea pen, Pennatulacea

Sessiliflorae (Add)

Fam. Anthoptilidae (Add)
Fam. Chunellidae (Add)
Fam. Echinoptilidae (Add)
Fam. Funiculinidae (Add)
Fam. Kophobelemnidae (Add)
Fam. Protoptilidae (Add)
Fam. Renillidae (Add)
Fam. Scleroptilidae (Add)
Fam. Stachyptilidae (Add)
Fam. Umbellulidae (Add)
Fam. Veretillidae (Add)

Subselliflorae (Add)

Fam. Pennatulidae (Add)
Fam. Pteroeididae (Add)
Fam. Virgulariidae (Add)