Mycedium umbra

Mycedium umbra is a coral species belonging to the family Merulinidae. It is typically found in tropical regions, specifically within the Western Central Pacific, including the Philippines. This coral thrives in reef-associated environments, inhabiting depths ranging from the surface down to 30 meters. Divers can spot this species in areas characterized by diverse reef ecosystems. The reproductive behavior of Mycedium umbra is notable. As a member of the class Anthozoa, it can be either gonochoric or hermaphroditic. During reproduction, mature gametes are released into the coelenteron and subsequently spawned through the mouth. The resulting zygote develops into a planktonic planula larva, which eventually undergoes metamorphosis. This process includes the early formation of tentacles, septa, and a pharynx before the larva settles on its aboral end. Encounters with Mycedium umbra during dives can be intriguing, as divers may observe its unique life cycle stages. The species is listed as Least Concern on the IUCN Red List.