The mystery of the narwhal tooth

The video explores the unique tooth of the narwhal, known as a tusk. Initially, the purpose of this tusk was a mystery, with theories suggesting it was used for breaking ice, fighting, or attracting mates. However, scientific research revealed that the tusk is a sensory organ, sensitive on the outside and hard on the inside, allowing narwhals to detect changes in temperature, salt concentration, and chemicals in the water, aiding their survival in the Arctic.

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