San Francisco Anemone

Diadumene franciscana

San Francisco Anemone, known scientifically as Diadumene franciscana, is a sessile marine species found in subtropical regions of the Eastern Pacific, including areas around Hawaii, the USA, and Canada. It is typically solitary, meaning it does not form colonies like some other anemones. Divers may encounter this species at various dive sites near DiveSight locations. The life cycle of the San Francisco Anemone involves a unique reproductive process. Members of its class, Anthozoa, can be either gonochoric or hermaphroditic. Mature gametes are released into the coelenteron and are subsequently spawned through the mouth. The resulting zygote develops into a planktonic planula larva, which undergoes metamorphosis. This process includes the early development of tentacles, septa, and pharynx before the larva settles on the aboral end. Divers who encounter this species can observe its solitary nature and unique reproductive behavior.