The total number of species include 16,000 species of insects (probably 4,000 more species yet to be described), 20,000 species of algae, 1,800 species of lichen, 1,050 species of mosses, 2,800 species of vascular plants, up to 7,000 species of fungi, 450 species of birds (250 species nesting in Norway), 90 species of mammals, 45 fresh-water species of fish, 150 salt-water species of fish, 1,000 species of fresh-water invertebrates, and 3,500 species of salt-water invertebrates. About 40,000 of these species have been described by science. The red list of 2010 encompasses 4,599 species. Norway contains five terrestrial ecoregions: Sarmatic mixed forests, Scandinavian coastal conifer forests, Scandinavian and Russian taiga, Kola Peninsula tundra, and Scandinavian montane birch forest and grasslands.