global biodiversity information facility. free and open access to biodiversity data.

the catalogue of life

online floras and similar projects

for nearly 50 years, natureserve has been the authoritative source for biodiversity data throughout north america. we work with 60+ network organizations and 1,000+ conservation scientists to collect, analyze, and deliver biodiversity knowledge that informs conversation action.

an interactive encyclopedia about the taxonomy, natural history, distribution, abundance & ecology of species. includes identification guides, maps & tools to study nature.

an online resource devoted to north american insects, spiders and their kin, offering identification, images, and information.

inaturalist is a social network for naturalists! record your observations of plants and animals, share them with friends and researchers, and learn about the natural world.