First published: Great Britain : Orion Children's Books, 2004.

Emily Windsnap is thrilled to arrive at her new home, a secret island near the Bermuda Triangle where humans and merfolk live together, and where being a girl who grows a tail as soon as she enters the water isn't a problem. Being Emily, she can't resist exploring forbidden places - and as a result, she inadvertently wakes the kraken, the legendary deep sea monster who has been asleep for two hundred years. Exciting adventure begins - not just for Emily, but for her old adversary Mandy Rushton, whose parents have taken her on a cruise and whose father thinks he can make his fortune if he catches a mermaid. 9 yrs+