Single Horn Bryozoan

Schizoporella unicornis

Schizoporella unicornis is a species of bryozoan characterized by its unique horn-like structures. It is typically found on the undersides of boulders and in various marine environments, often in areas that range from sheltered to moderately exposed. This species inhabits the Northern Atlantic Ocean, with a native distribution in both Europe and North America. It has also been introduced to the Pacific Ocean, including regions such as North America, Japan, and Australia, as well as the South Atlantic Ocean along Brazil. The depth range for Schizoporella unicornis is between 7 and 33 meters, although it can be found shallower in some instances.  In Brazil, where it is considered an introduced species, Schizoporella unicornis serves as nursery habitat for various small brachyuran crab species. Other marine organisms, including crustaceans, polychaetes, and echinoderms, may utilize its structures for shelter. The colony can grow new zooids on top of previous layers, creating complex habitats. This bryozoan is hermaphroditic, allowing for both internal and external fertilization and egg brooding. Encountering Schizoporella unicornis while diving can be intriguing, as divers may observe its colonies clinging to substrates, providing a glimpse into the intricate relationships within marine ecosystems. However, the conservation status of this species is currently not evaluated, indicating a need for further research to understand its ecological impact and distribution better.