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RE: When narwhals (Monodon monoceros) rub their tusks together, it is believed to be to share information about the water, not as a sign of aggressive rivalry
Hey just found your blog and it looks really interesting ... when I have time ill be back to read a bunch!!! Thanks for creating good content on STEEM!
Thanks for stopping by! Enjoy the reading, and feel free to ask any question you might have if there is something that is unclear :)