About the Data
Species records include data on invasions history, distribution, ecology, impact, and more. These data were gathered from published literature and targeted surveys. All records have undergone expert review, unless otherwise noted.
Species Profiles
NEMESIS includes detailed information on about 500 species of marine and estuarine of invertebrates and algae introduced to the United States. Each record contains information on taxonomy, distribution, ecology, and impacts, as well as references.
Schizoporella japonica
Schizoporella japonica is a heavily calcified encrusting bryozoan which is native to the Northwest Pacific, from China to Northern Japan. Introduced populations are known from the West Coast of North America ranging from Alaska to Point Conception, California. The full extent of its native and introduced range is uncertain because of confusion with S. unicornis, S. errata, and other Schizoporella species. Schizoporella spp. are common fouling organisms and frequently dominate the fouling community on man-made structures such as ships' hulls and docks.
Daily Invader for 2026-07-02