Post by: susan on August 19, 2026, 08:15:17 AM
The study, published in the journal Nature Communications, explains how it's actually two opposing spirals that counteract each other and allow the tusk to grow straight.
Source: New research discovers the twisty secret behind the narwhal's unusually straight tusk (https://www.cbc.ca/news/science/research-narwhal-tusks-9.7311464?cmp=rss)