"Mermaid" My favorite stories about mermaids and sirens often include bewitching unwitting sailors to their deaths. I have absolutely nothing against The Little Mermaid but sometimes a darker fantasy is really all I want to read.
A mermaid is a legendary aquatic creature with the upper body of a human and the tail of a fish. In other folk traditions they can be benevolent, bestowing boons or falling in love with humans. Mermaids are associated with the Sirens of Greek mythology.