Spirulina's father, Neptune, is in big trouble: he lost a bet with Ariel but he can't pay up because all his treasure has been stolen! Soon Spirulina finds herself in a race against time to catch the thief and find the treasure - before the mermaid family must give up their home...
- ISBN10 0439951127
- ISBN13 9780439951128
- Publish Date 3 July 2006 (first published 16 July 2004)
- Publish Status Out of Print
- Out of Print 25 February 2010
- Publish Country GB
- Imprint Scholastic
- Format Paperback
- Pages 48
- Language English