#6 Spacemice: The Underwater Planet - Paperback | Geronimo Stilton

Age: 7-10Y

Pages: 128

Format: Paperback 

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?