Narwhal tusks are often mistaken for horns, but they are actually elongated teeth. Unlike unicorns, the narwhal's 'horn' is a tooth that protrudes from its upper lip.
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Male Feature
Mostly male narwhals have the long tusks, which can be up to 10 feet long. Spotting a narwhal with a long tusk usually means it's a male.
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Arctic Habitat
Narwhals live in the cold waters of the Arctic, often around Canada and Greenland. Narwhals are rarely seen beyond the frigid Arctic sea ice.