This could be used to show how archetypes change through time in literature. The sirens in The Odyssey are quite different from the siren as a mermaid, or even the more modern sirens in Harry Potter.<<< Or idk man they could just be SWS lyrics
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.
Gorgeous concept art of Pirates of the Caribbean 4's sultry mermaids