The Biodiversity Heritage Library improves research methodology by collaboratively making biodiversity literature openly available to the world as part of a global biodiversity community.
The Animal Diversity Web is an online database and encyclopedia of animal natural history, built through contributions from students, photographers, and many others.
iNaturalist helps you identify the plants and animals around you while generating data for science and conservation.
The aim of a World Register of Marine Species (WoRMS) is to provide an authoritative and comprehensive list of names of marine organisms, including information on synonymy.
Free silhouette images of animals, plants, and other life forms, available for reuse under Creative Commons licenses.