Smithsonian Institution. Smithsonian Environmental Research Center. Marine Invasions Research Lab. National Exotic Marine and Estuarine Species Information System (NEMESIS).
DOC. NOAA. Great Lakes Environmental Research Laboratory. Great Lakes Aquatic Nonindigenous Species Information System (GLANSIS).
DOI. USGS. Wetland and Aquatic Research Center.
Provides fact sheets, maps and collection information for aquatic vertebrates and invertebrates occurring outside of their native range.