Given that there are very few underwater observations of narwhals and so little is understood about this whale’s behavior, ...

The whales, which have distinctively long tusks, were filmed in the Arctic chasing a fish in what seemed like a ...

The cold waters of the Arctic are home to an unusual whale that you might have heard of, the narwhal. Narwhals have a long, sharp tusk that juts out of their heads. As NPR's Nell Greenfieldboyce ...

Given that there are very few underwater observations of narwhals and so little is understood about this whale's behavior, however, another researcher who wasn't part of the study team is skeptical.