WNegligible senescence
WAldabra giant tortoise
WArctica islandica
WAspen
WColony (biology)
WCoral
WTardigrade
WDiadumene cincta
WFreshwater pearl mussel
WHydra (genus)
WLobster
WNaked mole-rat
WPinus longaeva
WPlanarian
WSanicula
WSea anemone
WSea urchin
WSebastes
WTurritopsis dohrnii