# X-rays add new twist to narwhal's spiral tusk

# X 射线为独角鲸螺旋长牙之谜带来新转折

作者: Jennifer Ouellette | 分类: Science, Biology, marine biology, narwhals | 原文: arstechnica.com

时间: Tue, 18 Aug 2026 15:00:51 +0000

Narwhals are toothed whales, renowned for their distinctive straight, spiraling tusks, which many people in medieval times believed were the horns of unicorns and thus held magical healing properties.

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