Databases
National Exotic Marine and Estuarine Species Information System (SERC)
http://invasions.si.edu/nemesis/index.html
Ballast Water: Smithsonian Environmental Research Center
http://invasions.si.edu/nbic/submit.html
United States Geological Survey: Nonindigenous Aquatic Species (NAS) Information Resource
http://nas.er.usgs.gov/
International Nonindigenous Species Database Network
http://www.nisbase.org/nisbase/index.jsp
Oregon Invasive Species Public Map
http://www.imapinvasives.org/orimi/map/