WAnthoathecata
WBougainvillia
WBougainvillia muscus
WBougainvillia superciliaris
WChondrophore
WCladonematidae
WClava (hydrozoa)
WCordylophora
WCordylophora caspia
WCordylophora
WCoryne
WCoryne eximia
WCorynidae
WFire coral
WHeterastridium
WHydractinia
WHydractinia altispina
WHydractinia echinata
WHydractinia symbiolongicarpus
WHydractiniidae
WHydrichthys
WHydrichthys sarcotretis
WHydrocorella
WHydrocorella africana
WMillepora alcicornis
WMillepora complanata
WMillepora dichotoma
WMillepora platyphylla
WMillepora squarrosa
WFire coral
WNemopsis bachei
WOceaniidae
WPandea rubra
WPandeidae
WPennaria disticha
WPolyorchis
WPorpita
WPorpita porpita
WPorpita prunella
WSarsia
WScrippsia
WSpirocodon
WTubularia
WTubularia indivisa
WTurritopsis
WTurritopsis dohrnii
WTurritopsis nutricula
WVelella
WZyzzyzus