Intriguing video of narwhals using their tusks to mess with fish has scientists speculating about what this behavior might mean.

Scientists previously thought the narwhal’s trademark tusk helps males compete for mates, but new evidence suggests it may also have a role in foraging and play.

And now we’ve got two things happening at the same time: a heartbeat that sounds like a scared rabbit and then they’re swimming as fast as a narwhal can swim.” These conflicting actions lead the team ...

Narwhals, ‘unicorns of the sea,’ might use their tusks for play The whales, which have distinctively long tusks, were filmed in the Arctic chasing a fish in what seemed like a “cat-and-mouse ...

Despite its puckish title, Mr. Gregg’s book “If Nietzsche Were A Narwhal: What Animal Intelligence Reveals About Human Stupidity” makes some extraordinary and thought-provoking points.

Narwhal, a 10-week-old puppy brought to a Missouri dog rescue, has a tail growing out of his head. He's already a social media sensation.

The “unicorns of the sea” have fascinated mariners and royalty for centuries, but we still don't know exactly what their tusks are for.

The Leon Bridge won't be safe until you defeat the Narwhal, a powerful optional boss in Romancing Saga 2.

Narwhals have fascinated and confounded humans for centuries. The Peabody Essex Museum is diving into the mystery, history and science of the tusked “unicorns of the sea.” ...

Scientists previously thought the narwhal’s trademark tusk helps males compete for mates, but new evidence suggests it may also have a role in foraging and play.

Intriguing video of narwhals using their tusks to mess with fish has scientists speculating about what this behavior might mean.