Male and female narwhals only have two teeth, which are both in the upper jaw. The male’s iconic, spiralling tusk is in fact a canine tooth. It can grow up to three metres long. Narwhal tusks were ...

“The oldest narwhal on record is over 100 years.” Fisher told MassLive, “Our tusk is measured to be close to 100 years old.” Male narwhals most commonly have tusks and some may even have ...

Caption Like walruses and elephants, male narwhals (Monodon monoceros) grow tusks; these are modified teeth. In narwhals, the left tooth erupts from their head, reaching more than 8-feet-long in ...

Now, thanks to Arizona State University researcher Zackary Graham and his colleagues, we can add the "unicorn of the seas," the narwhal ... can have tusks ranging from 1.5-feet to 8.2-feet ...

Since he was a child, Martin Nweeia, DMD (DEN ’84), has been fascinated with teeth—from the human variety to the 9-foot spear-shaped tusk that grows out of the head of the narwhal, an Arctic whale.

The most extraordinary feature of the narwhal is the long, spiral tusk which always has a left- handed spiral. No one is sure why it twists this way. The tusk, which measures up to 3m in length ...