An intergovernmental organization dedicated to preventing and controlling aquatic nuisance species, and implementing the Nonindigenous Aquatic Nuisance Prevention and Control Act of 1990.

Aims to provide a reference system on alien species, to update the information on the Baltic Sea alien species and to encourage the exchange of data among different geographical regions.

The database includes records of species introduced or transferred from one country to another and does not consider movements of species inside the same country.

Exotics- learn about nonindigenous creatures that invade the Great Lakes Region of the U.S. - Don't let them hitch a ride with you!

Introduction to the topic from the Ontario Federation of Anglers and Hunters.

The Exotic Species pages give an introduction to the problems associated with these organisms, the pathways for their introduction, and an overview of treatment and control methods.

A central repository for spatially referenced biogeographic accounts of nonindigenous aquatic species in the USA.