Disney and Pixar created Finding Nemo (2003) as part of their historic multi-film partnership, but the specific inspiration for the story came from director Andrew Stanton’s personal life and childhood. Stanton had a vivid memory of a fish tank at his childhood dentist's office and often wondered if the fish wanted to return to the ocean. Later, as a father, he realized he was being overprotective of his young son during a trip to the park, which sparked the central theme of a father (Marlin) learning to let go. The film also served as a major technological showcase for Pixar; at the time, computer-animating a realistic underwater environment—with the way light refracts through water and how particles float—was considered a massive hurdle. Disney recognized the broad emotional appeal of a "rescue" story and the commercial potential of the vibrant Great Barrier Reef setting. The film was greenlit to explore themes of family, trust, and resilience while pushing the boundaries of what 3D digital animation could achieve.