15/04/2022
In the Middle Ages, sailors and merchants introduced narwhal (Monodon monoceros) tusks to European markets and sold them as "unicorn" horns, according to the AMNH. Narwhals are toothed whales from the Arctic. Male narwhals possess a projecting tooth 6.6 to 9.8 feet (2 to 3 m) long that resembles a horn, according to the University of Washington's Polar Science Center.