The Beluga inhabits the arctic and subarctic waters. Around Greenland, it is most abundant along the West Coast, but are present at the East Coast as well. The whale is a medium sized tooth whale, and reaches a maximum length of about 5 meters. The males can weigh up to 1500 kg and are somewhat larger than the females. Calves and immature belugas have a greyish/bluish colour, but becomes paler with time, until they are completely white at the age of 5-10 years. The whale has no dorsal fin, only a small ridge just behind the midpoint of the back. The Beluga feed on varies species of schooling fish, squids and crustaceans. The female reaches sexual maturity at the age of 4-7 years, while the male is older, 6-7 years. Belugas can live to be at least 25 years in the wild.