Does the narwhal's famous tusk help it catch fish?
Intriguing video of narwhals using their tusks to mess with fish has scientists speculating about what this behavior might mean.
Narwhals
Stressed-Out Narwhals Don't Know Whether to Freeze or Flee, Scientists Find
After being caught in a net, narwhals appear to get confused about what to do. Researchers say the whales' befuddlement could provide clues about how they will adapt to a changing Arctic.