https://www.live-feeds.com/feed/double-spiral-secret-of-narwhal-s-twisted-tusk-revealed-by-high-tech-x-raysContinuously updated, source-cited coverage. https://www.live-feeds.com/feed/double-spiral-secret-of-narwhal-s-twisted-tusk-revealed-by-high-tech-x-rayshttps://www.live-feeds.com/feed/double-spiral-secret-of-narwhal-s-twisted-tusk-revealed-by-high-tech-x-rays#u48167Tue, 25 Aug 2026 09:22:12 +0000Scientists have uncovered the structural secrets of the narwhal's iconic twisted tusk using high-tech X-rays. The tusk, which resembles a unicorn horn, has a unique double-spiral structure. Researchers used 3D X-ray imaging to study the tusk's internal anatomy. The findings reveal that the tusk is made up of two intertwined spirals, which provide its strength and flexibility.Why it mattersThe narwhal's tusk has long been a subject of fascination due to its unique appearance. The tusk can grow up to 10 feet long and is actually a modified tooth that protrudes from the upper jaw o