- Cast: Cate Blanchett, Matt Damon, Liam Neeson, Tina Fey, Cloris Leachman, Lily Tomlin, Betty White, Noah Lindsey Cyrus, Madison Davenport, Frankie Jonas, Kurt Knutsson, Jennessa Rose, Carlos Alazraqui, Bob Bergen, Johanna Braddy, Marsha Clark, John Cygan, Jennifer Darling, Madison Davenport, Courtnee Draper, Crispin Freeman, Jess Harnell, Ella Dale Lewis, Sherry Lynn, Danny Mann, Mona Marshall, Mickie McGowan, Laraine Newman, Colleen O'Shaughnessey, Jan Rabson
- Director: Hayao Miyazaki
- Writer: Hayao Miyazaki
- Producers: Steve Alpert, Kathleen Kennedy, Frank Marshall, Toshio Suzuki
- Executive Producers: Naoya Fujimaki, Ryoichi Fukuyama, Koji Hoshino, John Lasseter, Hayao Miyazaki, Seiji Okuda
- Art Direction: Noboru Yoshida
- D.O.P.: Atsushi Okui
- Editors: Hayao Miyazaki, Takeshi Seyama
- Music: Joe Hisaishi
The son of a sailor, 5-year old Sosuke lives a quiet life on an oceanside cliff with his mother Lisa. One fateful day, he finds a beautiful goldfish trapped in a bottle on the beach and upon rescuing her, names her Ponyo. But she is no ordinary goldfish. The daughter of a masterful wizard and a sea goddess, Ponyo uses her father's magic to transform herself into a young girl and quickly falls in love with Sosuke, but the use of such powerful sorcery causes a dangerous imbalance in the world. As the moon steadily draws nearer to the earth and Ponyo's father sends the ocean's mighty waves to find his daughter, the two children embark on an adventure of a lifetime to save the world and fulfill Ponyo's dreams of becoming human.
- Aspect Ratio: 1.85:1
- Production Budget: $36 million
- Production Companies: Studio Ghibli, Nippon Television Network Corporation, DENTSU Music And Entertainment, Hakuhodo DY Media Partners, Walt Disney Company, Mitsubishi, Toho Company, Yomiuri Shimbun
Sosuke is based on Hayao Miyazaki's son Goro Miyazaki, when he was five years old.
The film uses a watercolor and pastel like animation style.
The number of animation cels in this movie exceeds 160,000.
Sousuke's father works aboard a ship named the Koganei Maru. Koganei is the town in Western Tokyo where Studio Ghibli is located.
The opening 12 seconds, involving vast schools of fish and undersea creatures, required 1613 pages of conceptual sketches to develop.
Toki, the bitter old lady in the rest home, is actually an affectionate homage to Miyazaki's mother (as was the mother in Tonari no Totoro (1988)).
The sequence in which Ponyo offers food to the baby was included to show that Ponyo could indeed be selfless and live in the human world. Miyazaki developed the scene late in production when he was stuck on how to bring about the ending.