Cleo is trying to live a normal live, and one way of doing that is by getting a job at the Marine Park, all the while knowing that one splash of water could turn her into a mermaid. Despite Emma and Rikki's concerns about her new job, Cleo manages to keep her secret safe. But when Emma throws a sleepover party and someone spills a drink, things get a little tricky. Can the three friends still keep their fishy secret from the others, or will all be revealed?

 

This book features in the following series: H2O Just Add Water, H2O-Just Add Water .

There are 128 pages in this book. This book was published 2009 by Simon & Schuster .

SpongeBob creator, Stephen Hillenburg, taught marine biology at the Orange County Marine Institute, California, before he pursued a career in experimental animation and came up with the ideas and characters for one of Nickelodeon's most popular cartoons.