I really did not like Chloe Sanders's My T-Rex Gets a Bath, but this story was altogether different.>
Frankly, this book sounded from the title like it was a rip-off of the Disney Movie or of the original story itself which Disney ripped-off, but it wasn't. I can't blame it for the title: every author needs to try and get an edge, after all - and the story was original, fun, instructive, and has a wry sense of humor running through it. It was faultlessly-written, and beautifully illustrated (by the author, who is a talented artist - and who is not to be confused with the actor of the same name!).
Celia the mermaid is out looking for her friend Billy the dolphin so they can go play, and as the two of them set out, they encounter a bullying shark. Here is where the book departs from what you might have expected at this point, and Celia really comes through and shows her smarts, making a friend instead of an enemy. A great lesson in diplomacy! I recommend this one.