Videos show narwhals using their tusks in several ways, including prodding and flipping a fish. It’s the first reported evidence of the whales playing.

Narwhals use their tusks to bat around fish in first documented case of narwhal play.

seafarers brought these tusks home and passed them off as unicorn horns. "It almost seems like it was the strongest proof ...

With a fabled ability to purify tainted water or heal ailments, the narwhal's spiraling tusk was highly coveted during the Middle Ages when it was mistaken for a unicorn's horn.

Narwhal tusks are the stuff of legends — literally. Growing up to ten feet long, they were once believed by some medieval ...

The long, spiral tusks of narwhals could be used by these Arctic ... seafarers brought these tusks home and passed them off as unicorn horns. "It almost seems like it was the strongest proof ...