To see this content please enable targeting cookies. Or if you'd rather check out other occult races you can be, take a gander at how to become a Spellcaster, Werewolf or Vampire in other expansions. Looking for more The Sims 4 help? Our The Sims 4 cheats page can fast track you to various aspects of the game. Other ways to get Mermaids in The Sims 4.How to stop being a Mermaid in The Sims 4.How to become a Mermaid in The Sims 4 by finding Mermadic Kelp.What are Mermaids in The Sims 4 and how do they work?.This page explains explains the various ways on how to become a Mermaid in The Sims 4 with a complete Mermaid guide, as well as giving you advice on how to renounce your mermaid-dom for good if you decide you prefer life as a regular human. Themed around life on the tropical island of Sulani, this The Sims 4 expansion focuses on beach holiday activities from sunbathing to snorkelling, as well as on the conservation of the natural environment, and the aforementioned new occult creature type - mermaids! The Sims 4 Mermaids is one of the most unique occult races that's been added to The Sims 4, and is the key one involved in The Sims 4 Island Living, the 2019 expansion pack for the ever-popular life simulation game.