Not at all, every little mermaid leaves the studio with their feet safely attached!
This question actually comes up more often than you might think, especially from younger children who are wonderfully committed to the idea of becoming a real mermaid. The mermaid tail is simply a costume worn during the session, and children can step in and out of it easily.
For digital mermaid artwork, the transformation happens later during the editing process. I carefully combine photographs and create the underwater scene by hand, so there’s no tricks happening during the session itself, just imagination, gentle posing, and a bit of studio magic.