You can explore any of the 12 categories and then select from a sub-category or opt to view all the animals within that species type. If you continue to click you will come upon a full description of the species, including a picture, description, voice, habitat, nesting habits and interesting discussions about that species. Each field guide also includes either a map of where it can be found, or links to additional information. The Bacteria Museum - This interesting site contains everything you want to know about bacteria. Continually updated, this site begins with what bacteria is and discusses evolution, mutation, pathogenic bacteria, food safety, how to fight bacteria and much more.
All explanations are cross-referenced with hyperlinks.
BioChemNet - Provides links to Web resources in biology and chemistry. It provides factual information about many species that are threatened or endangered. Mammal Species of the World - a searchable database of 4,629 currently recognized species of mammals, in a taxonomic hierarchy that includes Order, Family, Subfamily, and Genus. National Museum of Natural History - Provides information on the museum and the research it is doing. Science OceanLink - A Marine Science information page.