Editing SpongeBob SquarePants (seasons 1-5, 9-present) (section)

===Conception===
While working as a staff artist at the Ocean Institute, Hillenburg entertained plans to return eventually to college for a master's degree in art. Before this could materialize, he attended an animation festival, which inspired him to make a slight change in course. Instead of continuing his education with a traditional art program, Hillenburg chose to study experimental animation at the California Institute of the Arts. His thesis film, Wormholes, is about the theory of relativity. It was screened at festivals, and at one of these, Hillenburg met Joe Murray, creator of the popular Nickelodeon animated series, Rocko's Modern Life. Murray was impressed by the style of the film and offered Hillenburg a job. Hillenburg joined the series as a director, and later, during the fourth season, he took on the roles of producer and creative director.

Martin Olson, one of the writers for Rocko's Modern Life, read The Intertidal Zone and encouraged Hillenburg to create a television series with a similar concept. At that point, Hillenburg had not even considered creating his series. However, he realized that if he ever did, this would be the best approach. He began to develop some of the characters from The Intertidal Zone, including the comic's "announcer", Bob the Sponge. He wanted his series to stand out from most popular cartoons of the time, which he felt were exemplified by buddy comedies like The Ren & Stimpy Show. As a result, Hillenburg decided to focus on a single main character: the "weirdest" sea creature he could think of. This led him to the sponge. The Intertidal Zone's Bob the Sponge resembles an actual sea sponge, and at first, Hillenburg continued to use this design. In determining the new character's behavior, Hillenburg drew inspiration from innocent, childlike figures that he enjoyed, such as Charlie Chaplin, Laurel and Hardy, Jerry Lewis, and Pee-wee Herman. He then considered modeling the character after a kitchen sponge and realized this idea would match the character's square personality perfectly.
To voice the series' central character, Hillenburg turned to Tom Kenny, whose career in animation had started alongside Hillenburg's on Rocko's Modern Life. Elements of Kenny's personality were employed to develop the character further. Initially, Hillenburg wanted to use the name SpongeBoy—the character had no last name—and the series was to have been called SpongeBoy Ahoy! However, the Nickelodeon legal department discovered—after voice acting had been completed for the original seven-minute pilot episode—that the name "SpongeBoy" was already copyrighted. In choosing a replacement name, Hillenburg felt he still had to use the word "Sponge", so that viewers would not mistake the character for a "Cheese Man". He settled on the name "SpongeBob". "SquarePants" was chosen as a family name after Kenny saw a picture of the character and remarked, "Boy, look at this sponge in square pants, thinking he can get a job in a fast food place." When he heard Kenny say it Hillenburg loved the phrase and felt it would reinforce the character's nerdiness.