There were a lot of options to choose from for this post since illustrations of kelpies, water women, sirens and such seem to be a popular subject. For simplicity sake, I'm just including mermaids with the classic fish tail physique.
Plus one token Merman by Edmund Dulac
R.I.P. Jeffery Catherine Jones
John William Waterhouse
Wednesday: Admirable Artists: Howard Pyle
Saturday: Inspirational Illustrations: Observers and Other Onlookers