Narwhal

"Narwhals lost at sea and never seen again;
Does myth and mystery lie,
Where the unicorns go?"

America, "In The Sea"

Narwhals fascinate me. They're like unicorns, except they are real! Not that unicorns aren't, but nobody's actually found one yet; they have found narwhals though. And they really do have a long horn, but nobody really knows why. There's all sorts of theories; fighting, breaking ice, sensing water temperature, to stop them bumping their heads on things, so they can hold jousting tourney's when human's aren't looking... but I think it's obvious really. They're magic horns, duh.