Albatrosses are large seabirds which belong to the biological family Diomedeidae. They live in the region of the Southern Ocean and the North Pacific Ocean. They are not found in the North Atlantic region, but their fossils have been found there, which shows that they used to live there. There are four main species of albatross: Great Albatrosses, North Pacific Albatrosses, Mollymawks and Sooty Albatrosses. These are divided into twenty-one species identified by the World Conservation Union (ICUN).