25/07/2022
Much like the rings of a tree can tell you its age and provide clues about the life it has lived, so too does the long tusk of the narwhal. Recent research led by a bioscience professor at Denmark's Aarhus University has shown that this peculiar arctic whale adds a layer to its distinctive tusk each year. And not only do these layers offer insight into the age of the narwhal (they've been known to live up to 50 years) but the conditions in which they lived—such as level of pollution, temperature levels, and even what their diet consisted of. You are what you eat!
