When the world-famous marine biologist, Dr Denman, comes to town there is much excitement. For budding scientist, Lewis, it's a dream-come-true as he might be able to work as her assistant. He might also be able to learn more about why his three friends, Cleo, Rikki and Emma, turn into mermaids everytime they're splashed with water. But as Lewis spends more time at Dr Denman's lab, Cleo and her friends begin to worry that they secret could be under threat. Could they end up as lab rats?

 

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 2011 by Simon & Schuster Ltd .

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.