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Narwhal tusk evolution

Narwhal tusk evolution


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I was reading about whales and wondered why did only narwhals, among all other species of whales, evolve to have tusks? Is there a specific environmental reason, for example something unique about the Arctic environment that requires them to have a tusk for easier survival?

I researched a bit and found many reasons why narwhals have tusks (e.g. weapons for fighting other male narwhals to compete for mates, sensing the environment, attracting female narwhals, echolocation, stunning prey for easier hunting) but couldn't find a reason why other whales do not have tusks.

Sources: https://www.google.com/amp/s/api.nationalgeographic.com/distribution/public/amp/news/2017/05/drone-footage-narwhal-tusk-mystery

https://www.google.com/amp/s/ocean.si.edu/ocean-life/marine-mammals/why-tusk-real-life-unicorns-sea-and-tusks-make-them-famous%3famp=

https://oceanconservancy.org/blog/2019/03/08/exactly-narwhal-tusk/

https://scholarblogs.emory.edu/evolutionshorts/2014/04/25/the-evolutionary-significance-of-the-narwhals-tusk/


Watch the video: Whales evolution (September 2022).


Comments:

  1. Bailoch

    Let's try be reasonable.

  2. Gentza

    In my opinion, you are making a mistake. Let's discuss this. Email me at PM.

  3. Jeremie

    This brilliant idea will come in handy.



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