WAcanthella (sponge)
WAgelas
WAmphimedon (sponge)
WAplysina
WAspidoscopulia
WAxinella
WCallyspongia
WCarteriospongia
WClathria
WCoeloptychium
WCraniella
WCrella
WGelliodes
WGeodia
WHaliclona
WLefroyella
WLeucetta
WOchridaspongia
WSpongilla
WStaurocalyptus
WSycon
WTedania