Title: Il mistero del pianeta sommerso
Description: 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! Can the spacemice keep the spacecats from stealing the treasure?
Subjects: Extraterrestrial beings, Juvenile fiction, Exploration, Mice, Planets, Children's fiction, Science fiction, Humorous stories, Extraterrestrial beings, fiction, Mice, fiction, Outer space, fiction, Picture books, Adventure and adventurers, fiction
Places: Outer space