National Ballast Water Information Clearinghouse
Developed a for the synthesis, analysis, and interpretation of national data concerning ballast water management and ballast-mediated invasions.
invasions.si.edu/ballast.htm
National Marine and Estuarine Invasions Database
Focuses on marine and estuarine alien species in U.S. waters, including organisms that occur in tidal waters of all salinities.
invasions.si.edu/nis.htm