So I think it would be cool if, at some point, we end up fighting with the humans at some point. The way I had imagined it is that we get discovered (which I will describe my idea after this one) and then they try to come and wipe us out. I thought one of us (preferably someone who could almost pass for human) ends up needing to go back to the mainland for supplies of some kind, but then they get noticed and get chased back to the island. That/those human(s) that chase the person back discovers that there are quite a few of us left and leaves. They later come back with their friends, dressed up in hunting gear and the likes.