Sea Creature Fun Facts: Narwhal
The narwhal is a medium-size toothed whale. -- The narwhal only has two teeth, and one of them can grow into a long tusk. Scientists aren’t sure yet what they use it for. -- Not all females grow tusks, but all males do and some of them even get to 9 feet long! Some people think that this spiral tusk is the source of the myth of the unicorn.
For more information about polar bears and Arctic wildlife, see the new IMAX® film "To The Arctic 3D" opening in select IMAX Theatres starting April 20, 2012. "To The Arctic 3D" is a MacGillivray Freeman Film from Warner Bros. Pictures and IMAX Corporation.