SpongeBob and Patrick spend an entire day inside a cardboard box? A monster attacks Bikini Bottom? Children join their friends from Bikini Bottom on two amazing adventures. These are two salty sea stories your child won't forget. Kids just place the book on the LeapPadr player, pop in the cartridge, and touch any page with the Magic Pen to bring learning to life. This book also works with the LeapPad Plus Writing learning system and the Quantum Padr learning system.