Beluga whale

The beluga whale (Delphinapterus leucas), is an Arctic and sub-Arctic cetacean. It is one of the 2 living species in the family, Monodontidae, the other being the narwhal, and the only species in the genus, Delphinapterus. Belugas are on of the most commonly kept cetaceans in captivity. Belugas have adapted to the Arctic, with it's all white-color and the absence of a dorsal fin, which allows the beluga whale to swim under ice with an ease.