Narwhals, Monodon monoceros, are toothed whales that live mostly in Arctic coastal waters and inlets. Male and female narwhals only have two teeth, which are both in the upper jaw. The male’s iconic, ...

A narwhal tusk that is nearly seven feet long is extremely rare. Here's where you can see it in Massachusetts.

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 ...

Though narwhals are classified as odontocetes (toothed whales), they literally have only these two teeth in their mouths.

During their two-week August expeditions, Nweeia and his team camp out on the shores of ice ... In 2014, Nweeia and his team published what he calls their “astounding” discovery: The narwhal tusk is a ...

Each male has a tusk, and occasionally two tusks, but fewer than 15% of females have one. The narwhal tusk is a marvel of engineering. It is both very strong and very flexible – which is unusual ...

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 ...

In narwhals, the left tooth erupts from their head, reaching more than 8-feet-long in some individuals. The tusk grows out in a spiral pattern, giving the appearance of a sea-dwelling unicorn. Credit ...

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.

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.