“Narwhals are known for their ‘tusking’ behavior, where two or more of them simultaneously raise their tusks almost vertically out of the water, crossing them in what may be a ritualistic ...

While narwhals had been seen before using their tusks to stun fish before eating them, this is the first published study documenting that behavior.

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.