Narwhals may be using their tusks to play, new study finds

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.

​ 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. Read More Breaking News, Latest News and Videos | CNN