October 2015
http://www.carls-sims-3-guide.com/islandparadise/mermaids.php this explains everything about mermaids as well as how to turn them safely back into a human sim.
December 2016
January 2017
August 2019
i found that if you eat ANOTHER MERMAID KELP and DON'T GO into the water you TURN BACK INTO A HUMAN!!!
September 2019
i haven’t left my house in days and still a mermaid.
September 2019
@whynotuh The idea is that your mermaid needs to dry out, so to speak, to turn back into a human. So if you're letting the sim rehydrate, he or she will stay a mermaid indefinitely.
October 2019