The Inflatables in Do-Nut Panic! (the Inflatables #3)

"Holey sprinkles! Donut's going on a treasure hunt. The prize? The most delicious cookie ever tasted. But to find it, he will need to sneak his inflata-pals out of the water park, survive shark-infested seas, and take on a petrifying Pickle. Will the holey hero make it back unpopped, or will the cookie crumble once and for all?"--Provided by publisher.