Title: 
Headings: What Is a Narwhal?
Wonder of the Day #489
What Is a Narwhal?
Have You Ever Wondered...
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Content: Sometimes called “the Arctic unicorn," narwhals are small whales (about 15-16 feet long) that live in the icy waters of the Atlantic and Russian areas of the Arctic Ocean, near Canada and Greenland. Narwhals are most closely related to the beluga whale. Male narwhals feature a unique, defining physical characteristic: a long protrusion from the upper left jaw that looks like a tusk or a horn. In medieval times, people believed that narwhal tusks were the horns of the legendary unicorn. In reality, though, a narwhal tusk is not a unicorn horn. In fact, it's not a horn at all. Would you believe it's a tooth? It's true! Male narwhals have a left incisor tooth that grows outward straight through the left side of the upper jaw.