The legendary narwhal is famous for its unicorn-like single tusk. The narwhal, or narwhale (Monodon monoceros) is the unicorn of the sea.
Photo by Glenn Williams (source) |
Photo by Paul Nicklen (source) |
These 3,500 lbs (1,600 kg) creatures have two teeth and in the males, the more prominent tooth grows out through the upper lips into a long swordlike, spiralled tusk that can reach 2.5 metres (8.8 feet) in length.
Photo by Paul Nicklen (source) |
It is believed by some scientist that the tusk is prominent in mating rituals, perhaps used to impress females or to battle rival suitors.
A newborn narwhal calf. - Photo by Paul Nicklen. (source) |
Females occasionally grow a small tusk and males have been seen with two, or none.
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A narwhal skull with double tusks at Natural History Museum, London. - Photo by adem80 |
Narwhals are inhabitants of Arctic coastal waters and rivers. They are related to bottlenose dolphins, belugas, harbor porpoises, and orcas.
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And here's the video.
via Amazing Creatures http://amazing-creature.blogspot.com/2012/07/narwhal-unicorn-of-sea.html
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