Protozoa (kingdom Protoctista) A phylum (division) of eukaryotic, single-celled micro-organisms which show a wide variety of forms. The phylum includes some plant-like forms and animal species that are free-living, commensal, mutualistic, and parasitic, and some important disease-causing organisms.
Lake Baikal in Siberia, Russia (Asia), is the world's deepest fresh water lake at 1,638 metres deep. It is 636 km long and is the world's sixth largest lake and 1,181 metr â¦ es of it is below sea level. It contains 20% of the world's fresh water which is so clear that divers suffer from vertigo.
Located in south-central Siberia, not far from the Mongolian border and surrounded by mountains, forests and wild rivers, Baikal is an immense and breathtaking area of natural beauty. 1  Although it's not the biggest lake in the world in size - that distinction goes to the salty Caspian Sea - it is the largest by volume. Nicknamed the Pearl of Siberia, Lake Baikal holds about 20% of the world's fresh surface water - more water than all of the North American Great Lakes combined. What WWF is doing Supporting Nature Protected Areas in Russia