Geronimo Stilton Spacemice #6 : The Underwater Planet

Spacemouse Geronimo Stiltonix's adventures are out of this world!

While at the beach, Geronimo Stiltonix stumbles upon a mysterious treasure map! The spacemice follow it and end up on Aquarix, a planet that's entirely underwater. During their exploration, they face fur-eating seaweed, ferocious piranha aliens, and . . . pirate spacecats! Squeak! Can the spacemice keep the spacecats from stealing the treasure?

• Author: Geronimo Stilton 
• Publisher: Scholastic
• Language: English
• Format: Paperback
• ISBN: 9789351038238
• Genre: Juvenile Fiction