Pearl does not give a definite response, instead saying that she gets emotional over the topic. Later at the same event, the actors discussed the disappearance of Pearl's mother. Alan affirmed that Mrs. Krabs' whereabouts are secret, and Bumpass joked that she had been taken to an oceanarium, saying: "Two words: Sea World." Character Creation and design Pearl was one of the first five characters Stephen Hillenburg created for SpongeBob. Her conceptualization is rooted in Hillenburg's tenure as a teacher at the Orange County Marine Institute in Dana Point, California. Screenwriter Allan Neuwirth describes the Marine Institute as Hillenburg's "first stop on the road to SpongeBob SquarePants," as it inspired the development of many of the series' characters; Hillenburg's decision to include a whale character was influenced by his regular supervision of whale watches, and a cetacean skeleton exhibit at the institute. Hillenburg's original sketch of Pearl in the show bible included flukes and pigtails, which were dropped from her final design. Mr. Krabs and Pearl had matching yellow and orange clothes initially, but they were given individualized colors before the production of the pilot episode. Hillenburg made Pearl a different species from her father because he wanted each member of the main cast to be a different type of animal. When he was first developing the characters, Hillenburg wanted Pearl and Mr. Krabs to travel around town in a caravan boat with a whale-sized teardrop trailer connected to it; while this element did make it into the series, it was only used sparsely in season one. The decision to have Mr. Krabs and Pearl live in an anchor was made after production of the first season had begun. The original map of the show's setting, which Hillenburg showed Nickelodeon executives as part of his pitch to the network in 1997, did not include an anchor house, and instead labeled the Krusty Krab as both characters' residence. Hillenburg originally planned for Pearl and Mr. Krabs to be mostly separate characters, with specific episodes dedicated to each character individually. This happened in several early episodes, such as "The Chaperone," but the writers found it more natural to include Mr. Krabs in Pearl-centric stories. Hillenburg considered this the biggest difference between the series and how he originally envisioned it. Animation historian Jerry Beck has stated that Pearl's breakout role was in "Bossy Boots," which he considers the episode that best established her