
Mermaids are marine beings commonly depicted as having human-like upper bodies and piscine lower bodies. Their existence has been reported for centuries by sea-faring folk, but has been dismissed as either mere superstition or the confusion of a drunken sailor.
The traditional image of a mermaid has existed since antiquity and likely has its origins in part-fish sea Gods such as Atargis and Dagon. Mermaids are shown as having long hair and holding a comb and a mirror. Mermen are few and far between. While the single-tailed mermaid is popular nowadays, in earlier times mermaids were frequently drawn with twin tails. Such mermaids can be seen in the older European cathedrals. They bear a strong resemblance to their cousin the Sheila-na-Gig.