Acabaria, Genus
Acanthastrea, Genus
Acanthogorgia, Genus
Acanthogorgiidae, Familia
Acrhelia, Genus
Acropora, Subgenus (Acropora)
Acropora, Genus
Acroporidae, Familia
Agariciidae, Familia
Alcyonacea, Ordo
Alcyoniidae, Familia
Alertigorgia, Genus
Alveopora, Genus
Anacropora, Genus
Animalia, Regnum
Annella, Genus
Anthelia, Genus
Anthoathecata, Subordo
Anthogorgia, Genus
Anthothelidae, Familia
Anthozoa, Classis
Antipatharia, Ordo
Antipathes, Genus
Antipathidae, Familia
Aphanipathes, Genus
Asterospicularia, Genus
Astreopora, Genus
Astrocoeniidae, Familia
Astrogorgia, Genus
Australogyra, Genus
Australomussa, Genus