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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
I really enjoyed reading your post, I don't know much about narwhals and was very fascinated with your article. I always assumed that their horn was used to attract mates but the theory that you brought up is very interesting. I am very curious as to why some females are able to grow this horn but others can't. If it is used for a sensory organ then how are the females who are lacking the horns get this kind of information? I would think it would put them at a distinct disadvantage like you stated. Looks like I'll have to do some more research on these awesome creatures!
I'm glad to hear that you enjoyed the post :) Yeah, narwhals are really interesting animals, and as you say, we still have a lot to learn about them. It will be very interesting to see if future studies will strengthen this theory about the horns being a sensory organ, or if these future studies will find another theory as to what they are used for.
This is the big question that everyone wants to know the answer to, but nobody does just yet.