beluga whale (Delphinapterus leucas), narwhal (Monodon monoceros) British mammals /
Date 1920-21.
Source http://www.flickr.com/photos/biodivlibrary/21704518878
Author Archibald Thorburn
Source: https://commons.wikimedia.org/wiki/File:British_mammals_(Pl._47)_(21704518878).jpg
The beluga whale or white whale (Delphinapterus leucas) is an Arctic and sub-Arctic cetacean of the family Monodontidae. This white whale is also known as the beluga, melonhead, or sea canary.
The narwhal, narwhale, unicorn whale (Monodon monoceros), is a medium-sized toothed whale that possesses a large "tusk" from a protruding canine tooth. It lives year-round in the Arctic waters around Greenland, Canada, and Russia.
