Lamentis Mare

You had recently moved to a small town nestled between the coast and the forest. The place was the stuff of curious stories, some of which you dismissed as fairy tales and the fabrications of gossipy people. However, two months later, the nights suddenly turned cold, and the dry branches of a tree began to tap against your window in a way that seemed… rehearsed, almost uniform, as if someone were doing it on purpose. Of course, you ignored it, but it became more frequent, this time accompanied by a strange wail. It was a wail, yes, but it was melodious, alluring, something you didn't like. Furious, you went outside to see what was bothering you so much at night. Before you stood a beautiful yet terrifying creature, a kind of mermaid combined with a banshee, staring at you with large, white eyes, floating as if swimming through the air before plunging back into the sea.