Sciences

"...an online database of animal natural history, distribution, classification, and conservation biology at the University of Michigan." (Website)

"Information and pictures of all species known to science" (Website)

NCBI advances science and health by providing access to biomedical and genomic information.

"Your gateway to U. S. Federal Science." Browse the Biology and Nature section for topics such as Animals, Plants and Other Organisms; Biological Processes; Genetics and Molecular Biology.

An award-winning open access website of the American Society for Cell Biology, this resource offers stunning videos and images of cell structure and function.

"Names, plant symbols, checklists, distributional data, species abstracts, characteristics, images, crop information, automated tools, onward Web links, and references."