free, online collaborative encyclopedia intended to document all of the 1.9 million living species known to science. It is compiled from existing databases and from contributions by experts and non-experts throughout the world.
A freely accessible, easy-to-search, public repository of reviewed and annotated images, videos, and animations of cells from a variety of organisms, showcasing cell architecture, intracellular functionalities, and both normal and abnormal processes
Search across disciplines and sources to locate articles, theses, books, abstracts and court opinions, from academic publishers, professional societies, online repositories, universities, and other web sites.
World's largest medical library with more than seven million books, journals, technical reports, manuscripts, microfilms, photographs, and images on medicine and related sciences, including some of the world's oldest and rarest works.
The NOAA Fisheries Office of Habitat Conservation protects, restores, and promotes stewardship of coastal and marine habitat to support our nation's fisheries for future generations. Their website documents their efforts, and is rich with information on these areas.
A collection of materials on the history of medicine and the medical humanities. It houses over 2.5 million items of extraordinary range and diversity, including books, films, archives, manuscripts and artworks from around the world.