Seductive women who sing beautifully mesmerizing songs to lure passing sailors to their deaths. The Argonauts escape their hypnotic melodies by having Orpheus, the master minstrel, play a song to drown them out. The Sirens also make an appearance in Homer's Odyssey. To find out how Odyssey's crew defeats them, click here. These days, Sirens are often depicted as mermaids, but back in the day they were shown as being part-bird, much like the Harpies.