A non-profit educational service of the American Society of Mammalogists. A visual resource at all levels of instruction.

The Macaulay Library is the world's largest and oldest scientific archive of biodiversity audio and video recordings.

Images of weather, space, shore and coastal seas, and thousands of marine species.

Images from the National Science Foundation's Multimedia Gallery

The NDB contains information about experimentally-determined nucleic acids and complex assemblies. Use the NDB to perform searches based on annotations relating to sequence, structure and function, and to download, analyze, and learn about nucleic acids.

The Micropolitan Museum exhibits captured images of micro-organisms.

Photos and line drawings of U.S. plants, including many cultivated or foreign taxa.

A consortium of natural history and botanical libraries that cooperate to digitize and make accessible the legacy literature of biodiversity held in their collections and to make that literature available for open access and responsible use as a part of a global “biodiversity commons.” BHL also serves as the foundational literature component of the Encyclopedia of Life (EOL).

This is a great introduction to taxonomic structure in the form of a tutorial and numerous explanations and definitions. Includes photos and sounds (for correct pronunciation).

Compiled by the U.S. Fish and Wildlife Service, Endangered Species Division.

Explanation and links to the HGP mission and goals, ethical issues, and possibilities of human genetic research from the National Human Genome Research Institute.

A dynamic inventory of Web-based neuroscience resources: data, materials, and tools.

The goal of the Species 2000 project is to create a validated checklist of all the world's species (plants, animals, fungi and microbes). This is being achieved by bringing together an array of global species databases covering each of the major groups of organisms. Currently the database contains 260,000 species, 420,000 synonyms, and 180,000 common names with 90,000 references. It includes 18 contributing databases.

The WWW Virtual Library (VL) is the oldest catalogue of the Web, started by Tim Berners-Lee, the creator of HTML and of the Web itself, in 1991 at CERN in Geneva. Unlike commercial catalogues, it is run by a loose confederation of volunteers, who compile pages of key links for particular areas in which they are expert; even though it isn't the biggest index of the Web, the VL pages are widely recognised as being amongst the highest-quality guides to particular sections of the Web.