Emily's fear of her first swimming lesson take a backseat when she discovers that her body transforms into a mermaid's when she enters the pool. And that's just the beginning of the fun as she discovers the alternate world of merfolk in the sea and attempts to see her father, and confronts Neptune.
This is no Little Mermaid, but rather a quirky and unusual story about an uncommon teenager. The book is at its best (and funniest) when it compares mer-teens and human teens. It drags a bit towards the end as Kessler seems to struggle with how to wrap up the story, but it has enough charm to make it an overall good read.