BioLib - Taxonomic tree of plants and animals with a photo gallery and some checklists for the Czech Republic and Slovakia. In Czech and English. Encyclopedia of Life - A new project to create an online reference source and database for every one of the 1.8 million species that are named and known on this planet. Includes FAQ and press resources. ARKive : Images of Life on Earth - An extensive collection of thousands of videos, images and fact-files illustrating the world's species gathered into one centralised digital library. BioImages - Virtual Fieldguide for UK Biodiversity - Large selection of pictures of organisms, mostly British in origin. Images are an aid to identification, showing different stages, states and views of the organisms. Search the database or follow a taxonomic tree. HabitasOnline - Information on the plants, animals, and fossils of Ireland. Includes an encyclopedia of marine life of the UK. From the Ulster Museum Sciences Division. Nature of New England - Photos, facts, and links to information about birds, butterflies, mammals, and wildflowers of this region. Utah Conservation Data Center - Database of photos and fact sheets for animals and plants occurring in this state. Includes lists of sensitive, threatened, and endangered species. Willi Hennig Society - Society of cladisticians, publishes the journal "Cladistics" Integrated Taxonomic Information System - Authoritative taxonomic information on plants, animals, fungi, and microbes of North America and the world. NCBI Taxonomy - Searchable and browsable taxonomy tree of organisms for which there are publicly available gene sequences. Census of Marine Life - A global network of researchers engaged in a ten-year initiative to assess and explain the past, present, and future diversity, distribution, and abundance of marine life in the oceans. World's Boreal Forests: Animal and Plant Species - Fact sheets and photos for mammals, birds, trees and other plants of boreal regions. Discover Life - Information about taxonomy, natural history, distribution, abundance, and ecology of many species worldwide. Includes tools to identify, map, and database species. Lepidoptera and Other Life Forms - Taxonomic tree of mammals, insects, birds, and plants. Includes common and scientific names, publication details, references, links, general range maps, and some images. Most complete for Lepidoptera. Classification of Living Things - An introduction to the naming and relationships of living things. Classification involves much human judgement and is in a constant state of flux as new information is discovered. Tree of Life Web Project - Collaborative effort of biologists from around the world, providing information about the diversity of organisms on Earth, their evolutionary history (phylogeny) and characteristics. African Wildlife Photographs - Library of high resolution stock wildlife photographs by John Visser. World Register of Marine Species - WoRMS aims to provide an authoritative and comprehensive list of names of marine organisms, including information on synonymy. Mikko's Phylogeny Archive - A compilation of various phylogenetic trees representing different views of taxonomy. Includes links to other taxonomic websites. Biodiversity Explorer - Classification of all forms of life, with some photos. Has a strong South African emphasis. iSpecies - A species search engine from Rod Page of Glasgow University. Search on either the common or Latin name of a species. Results are generated by querying other data sources. Wikispecies - Wikimedia Foundation project that aims to catalog all species. iNaturalist - Site and community for reporting personal observations of any plant or animal species in the world. i Go Terra - Database covering the flora and fauna of the world with a checklist for each country.