Shimajiro, who helped an injured baby whale Kuu-chan, takes care of Kuu-chan who wants to return to her mother and keeps her in touch. In order to return Ku-chan, who was about to be sent to the aquarium, to her mother, Shimajiro rides on her back and sets out on a journey toward the southern sea.
| Directing | Isamu Hirabayashi | Director |
| Directing | Hiroshi Kawamata | Director |
| Sound | Daudi Joseph | Theme Song Performance |
| Sound | Takashi Watanabe | Music |
| Sound | Mamiko Katakura | Music Editor |
| Writing | Yuka Osumi | Writer |
| Crew | Isamu Hirabayashi | Cinematography |
| Writing | Isamu Hirabayashi | Writer |
| Visual Effects | Takashi Yamada | Animation |
| Production | Tsutomu Chuji | Producer |
| Production | Yutaka Sugiyama | Producer |
| Production | Shuhei Ishibasi | Producer |
| Production | Hiroki Fujiwara | Producer |
| Production | Madoka Katsumata | Producer |
| Production | Yukari Kiso | Producer |
| Production | Takashi Nakamura | Producer |
| Production | Yoshimi Ishii | Producer |
| Art | Ken Murakami | Art Direction |
