Jousting weapon? Evolved unicorns? Magical horn of mysterious power? Apparently not. Some scientist people spent years researching those fabulous tusks and came to a somewhat boring conclusion: It’s a big tooth!
I’ll let the smart scientist explain in here in lots of technical detail…http://outside.away.com/outside/news/20051214_1.html
Or here in a more simple version…http://animals.howstuffworks.com/mammals/narwhal3.htm
Want to buy your own? Well they are available online of course! Just visit the friendly fellows at…www.narwhaltusks.com