Mermaids Beattie, Mimi, and Zelda are summoned back from a summer on land to save their underwater world from some seriously bad mermaids.
- ISBN10 1681197928
- ISBN13 9781681197920
- Publish Date 1 May 2018
- Publish Status Active
- Imprint Bloomsbury Publishing PLC
- Format Hardcover
- Pages 256
- Language English