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.

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 ...

Not much is known about the species of whale but new drone footage reveals at least one purpose for their mysterious tusks. More from Science Narwhals are an endangered species, with most of them ...

Now, thanks to Arizona State University researcher Zackary Graham and his colleagues, we can add the "unicorn of the seas," the narwhal, to the list. They found that male tusks can have over 4 ...

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 ...

The male’s iconic, spiralling tusk is in fact a canine tooth. It can grow up to three metres long. Narwhal tusks were once a highly sought-after commodity. They were often collected by Inuit and ...

Phone footage from the day shows Darryn Frost fighting off Usman Khan with a narwhal tusk, to help end the attack. Khan, who was wearing a fake suicide vest, was then shot dead by police.

If you ever want a chance to see a 82-inch narwhal tusk up close, look no further than Worcester, Massachusetts. Worcester’s EcoTarium, a science and nature museum, has received a donation of a ...