20. Narwhal

Making its home in the Arctic waters of Greenland, Canada, and Russia, the Narwhal is a medium-sized toothed whale which has a large tusk from a protruding canine tooth.

Making its home in the Arctic waters of Greenland, Canada, and Russia, the Narwhal is a medium-sized toothed whale which has a large tusk from a protruding canine tooth.

