Hairy Sea-Squirt

Ascidiella scabra

Ascidiella scabra is a sessile organism that can be recognized by its hairy texture and distinctive shape. It typically inhabits a variety of environments, ranging from the Southwest Atlantic to the Northeast Atlantic and the Mediterranean Sea, extending from Argentina to France, and further north to Norway and east to Israel. This species can be found at depths from 0 to 180 meters, although most occurrences are shallower than 50 meters, making it accessible for divers exploring these regions. As a hermaphroditic species, Ascidiella scabra is capable of both cross- and self-fertilization. Its life cycle begins with eggs that develop into lecithotrophic larvae, which eventually metamorphose into benthic adults. This reproductive strategy allows for a flexible approach to breeding in various environmental conditions. Diving encounters with the hairy sea-squirt can be quite interesting, as they often form colonies on hard substrates, providing a unique texture to the underwater landscape. Observers may find these creatures clinging to rocks or other surfaces, filtering food particles from the water, which mainly consists of plankton and organic matter. While they are harmless to humans, their presence contributes to the biodiversity of the marine ecosystem. Currently, Ascidiella scabra has not been evaluated by the IUCN, which means its conservation status is unknown. However, divers should be mindful of their surroundings and the delicate ecosystems these organisms inhabit.