1) Cali surf-rock band 2) Fabulous aquatic creatures 3) Fish-tailed males 4) Half man and half fish 5) Half-humans of folklore 6) Legendary consorts 7) Lives in the sea 8) Males with tails 9) Mythical ocean hybrids 10) Sea creatures of myth 11) Some males with tails Found on https://www.crosswordclues.com/clue/mermen