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.

If it is used for a sensory organ then how are the females who are lacking the horns get this kind of information?

This is the big question that everyone wants to know the answer to, but nobody does just yet.