The color varies with age. Calves are a reddish-brown at birth and remain so throughout the first year; during the second year this color slowly transforms to a marble blue gray. In the following 3 years the color fades as pigment is lost from the skin. By 6 years of age, belugas have attained their characteristic creamy white color.
Belugas inhabit cold Arctic waters, living amongst pack ice in the winter and shallow bays of large northern rivers in summer. They have no dorsal fin, which makes swimming under arctic ice sheets easier.
Belugas have a fatty melon shaped head, but there's a reason for this: They are known as "sea canaries" because of thier songs and chatter, which can even be heard above water. The melon on their head changes shape as the beluga makes sounds. Perhaps if they had more time in Aqua Land, Nanav could have sung to Joey.
