National Exotic Marine and Estuarine Species Information System (SERC)

Ballast Water: Smithsonian Environmental Research Center

United States Geological Survey: Nonindigenous Aquatic Species (NAS) Information Resource

International Nonindigenous Species Database Network

Oregon Invasive Species Public Map

ANS Examples

European Green Crab


(Carcinus maenas)

Native distribution is along the coasts of the North and Baltic Seas. Potential competitors for the food sources of native fish and bird species.