@crinrict I couldn't replicate it in a new save without mods either. The only mod I used in the other save was the Thril1 No Hysterical Deaths mod. I also noticed that one of my played sims from the save with the glitch sometimes swims like a mermaid but without the tail.
@crinrict that would be strange because I created some of the sims this happened with, so unless they autonomously ate the kelp while I was playing the other household I don't know how they could have become mermaids. Also, when I play as some of the sims who have said they're mermaids they have no mermaid interactions, songs, etc available to them. How do I check for the traits?
Your target might have the hidden Merfolk Woke trait (from successfully asking other mermaids). Interaction outcome tests if they are a mermaid & if your relationship is at least 70 OR (different L-tags) if they discovered one. I'm not sure why that last part is even there.
