Mushroom Tunicate

Distaplia occidentalis

Mushroom Tunicate is a colonial ascidian that typically reaches a maximum length of 10 cm. This species is characterized by its sessile nature, often found in rocky intertidal and low intertidal areas. Its colonies can appear as mushroom-like structures, which can help divers identify them among other tunicates. The tunicate's body is usually soft and may have a translucent or pale appearance, distinguishing it from other similar species in the area. This species inhabits the Eastern Pacific, ranging from boreal to subtropical regions. It is commonly found at depths between 0 and 15 meters, often thriving in environments where it can attach to rocky substrates. The Mushroom Tunicate is a filter feeder, consuming plankton and organic matter from the water column, which it captures using its specialized feeding structures. Mushroom Tunicates are hermaphroditic, capable of both cross- and self-fertilization. Their reproductive cycle involves the development of eggs into lecithotrophic larvae, which eventually metamorphose into benthic adults. Divers may encounter these tunicates clustered together, providing a unique sight as they form colonies on underwater surfaces. The IUCN status for this species is not evaluated, indicating a lack of specific conservation data.