Information relating to amphibian biology and conservation. Over 6000 species from around the world listed. Search by family, genus, species, common name, or by geographic region.

Provides information on prevention, control, education and research on aquatic nuisance species.

Searchable database of verified butterfly and moth records in the United States and Mexico. Beats all the field guides on butterflies available. Arranged taxonomically or geographically.

From the U.S. Fish & Wildlife Service. Description and details of the program, species information, links to related resources, and a glossary of terms.

This website is a collaboration among several agencies to provide information on invasive species in North America. Browse by species or geographic region. Includes photos, videos and maps.

Describes databases available online related to invasive species as well as general biodiversity