(CNN) — Scientists say they have the first recorded video evidence of narwhals using tusks not only to strike and manipulate fish during feeding but also engage in what appears to be playful ...

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With their long, spiral tusks, narwhals (Monodon monoceros) look like something out of a fairy tale. Primarily seen in male narwhals, these single elongated teeth that can grow up to 10 feet.

Narwhals use their tusks to bat around fish in first documented case of narwhal play. Researchers have long debated what narwhals’ tusks are for, with some arguing that the long, spiralled tooth ...

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Narwhal tusks are the stuff of legends, literally. Growing up to ten feet long, they were once believed by some medieval cultures to be the horns of mythical creatures like the unicorn — not to ...