The series revolves around Spongebob and his aquatic friends. SpongeBob SquarePants is an energetic and optimistic yellow sea sponge who lives in a submerged pineapple. SpongeBob has a childlike enthusiasm for life, which carries over to his job as a fry cook at a fast food restaurant called the Krusty Krab. One of his life's greatest goals is to obtain a boat-driving license from Mrs. Puff's Boating School, but he never succeeds. His favorite pastimes include "jellyfishing", which involves catching jellyfish with a net in a manner similar to butterfly catching, and blowing soap bubbles into elaborate shapes. He has a pet sea snail with a pink shell and a blue body named Gary, who meows like a cat.
Squidward is depicted as a grumpy and bitter turquoise octopus. He lives in the underwater city of Bikini Bottom in a moai situated between SpongeBob SquarePants' pineapple house and Patrick Star's rock. Squidward is annoyed by his neighbors for their perpetual laughter and boisterous behavior, though SpongeBob and Patrick are oblivious to being a nuisance to Squidward.