The Beluga (or white whale) is a marine mammal which inhabits Arctic and sub-Arctic waters. Beluga rarely exceed five metres in length (not a lot for a whale). They have a distinctive all-white colouring. They are commonly called sea canaries due to their unmistakeable high-pitched twitter.
Beluga are classified as Endangered, according to the IUCN, and in some regions (e.g. Alaska) are critically endangered.