Beluga Whale Delphinapterus leucas

Beluga Whales belong to the toothed or dolphin family of whales. Since they live mostly in arctic waters, adults are white and don't have the dolphin-type dorsal fin as they spend a lot of time under ice sheets. Males are larger than females and can reach some 5 metres long. Calves can be greyer/browner. Thanks to Keith Wood for this photo of a young Beluga off Newfoundland.