Narwhals Possess a Single, Enormous Tusk That Is Actually a Tooth

This distinctive tusk, which can grow up to 10 feet long, is an elongated canine tooth that protrudes from the male narwhal's upper jaw. It is believed to be a sensory organ, used for echolocation, navigating arctic waters, and possibly mating displays.

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https://en.wikipedia.org/wiki/Narwhal

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Published: March 29, 2026
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Odd Animals Ocean Weird Narwhal Tusk Whale Arctic Marine Mammal

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