(CNN) — Scientists say they have the first recorded video evidence of narwhals using tusks not only to strike ... Since so little is understood about this whale species, researchers like O ...

Humans have long been fascinated with narwhal tusks. During the Middle Ages, the long, spiraled teeth — mistaken for unicorn horns — were the prized possessions of European royalty.

The blue whale is the biggest animal that has ever existed ... In fact, the narwhal's famous, unicorn-like tusk is actually a ...

Screengrab from Florida Atlantic University, YouTube Humans have long been fascinated with narwhal tusks. During the Middle Ages, the long, spiraled teeth — mistaken for unicorn horns — were ...