WAcrozoanthus
WActinia
WActinoporus
WActinoscyphia
WActinoscyphiidae
WActinostephanus haeckeli
WAdamsia
WAlicia (sea anemone)
WAmphianthus
WAmplexidiscus
WAnemonia
WAnthothoe
WAntipathes
WAphanipathes
WBartholomea
WCalliactis
WCereus (anemone)
WCorallimorphus
WCorynactis
WDiscosoma
WEdwardsia
WEdwardsiella (sea anemone)
WHeterocyathus
WHeterodactyla
WIsanthus
WIsozoanthus
WLebrunia (animal)
WMetridium
WNematostella
WOulactis
WPalythoa
WPhyllodiscus
WRhodactis
WRicordea
WSagartia
WSagartiogeton
WThalassianthus
WTriactis
WZoanthus