条件筛选
-
What is the narwhal's horn used for? Mating season and lifespan
The narwhal is called the "unicorn of the sea" because of a long horn protruding from the top of its head, but it is not actually a horn - it is a tooth, and it can reach 2.7 meters in length. What is the narwhal's horn used for? In which months does it mate? How long does it live? A 2014 study published in The Anatomical
-
What information is there about the narwhal? A comprehensive guide in one article
What information is there about the narwhal?