>>28678389That's kind of boring, though. It might as well just be a woman. If she were actually attached to the shell like Venus then you could do a lot more with it. A bivalve that evolved a human-like appearance to catch prey, or to interact with people. Perhaps there is some backstory of them guiding, or tricking sailors, leading to legends of mermaids.
It would also make it seem more like a Pokemon. That just looks like a mermaid drawn in a Pokemon style.