https://www.smithsonianmag.com/rss/tag/arctic-ocean/RSS feed for Arctic OceanenThu, 20 Aug 2026 15:11:05 +0000https://www.smithsonianmag.com/smart-news/narwhals-sport-iconic-straight-spiraled-tusks-scientists-just-uncovered-some-of-the-eye-catching-features-structural-secrets-180989368/The Arctic whales are the only known animals with straight tusks, and ones that consistently twist to the left. New research reveals that the inner layer twists to the right and that the opposing spirals provide strength and help the tusks grow straightThu, 20 Aug 2026 15:11:05 +0000https://www.smithsonianmag.com/smart-news/narwhals-sport-iconic-straight-spiraled-tusks-scientists-just-uncovered-some-of-the-eye-catching-features-structural-secrets-180989368/