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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

in #science7 years ago

Very good copy-paste skills. Please include the source the next time you are stealing the content from another source. While it's nice to write comments, stealing is not cool!

To other users; this is a copy paste from National Geographic's page about narwhals.