I don't remember the name of this book. It had a mermaid tail on the cover and it is about a girl doesn't know she is a mermaid. I think it was something like e..... tale. Does anyone know?

I think it might be The Tail of Emily Windsnap by Liz Kessler and if that is it then you might want to read the 2 other Emily Windsnap books Hope that helped. is it that cover of a girl with a red tail and has frinje is the cover with a girl with a red tail and the cover says SPLASH in a wiggley way?