Stilton, Geronimo.

Underwater Planet. - Scholastic, Incorporated 2016 - 128 p. - Spacemice ; 6 .

"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?"--Page [4] of cover.

ISBN: 9780545872430 9780545872430 (pbk.)

Subjects--Topical Terms:
Interplanetary voyages
Adventure and adventurers
Extraterrestrial beings
Mice
Humorous stories.