While at the beach Arale Norimaki rescues a shark. In return, the shark invites her and the rest of the Norimaki to their underwater city. Meanwhile, Suppaman intends to follow them and get revenge. While in the city, Arale meets Urashima Tarō, who joins Arale while playing at the amusement park.
内海賢二
as Senbei Norimaki (voice)
小山茉美
as Arale Norimaki (voice)
Naokazu Adachi
as Taro Urashima (voice)
島崎和歌子
as Mermaid Queen / Obotchaman (voice)
青野武
as Urashima Taro(voice)
江森浩子
as Turbo Norimaki(voice)
古谷徹
as Suppaman(voice)
掛川裕彦
as Eel(voice)
川浪葉子
as Midori Norimaki(voice)
佐藤智恵
as Child Shark (voice)
龍田直樹
as Father Shark (voice)
Yōko Teppōzuka
as Gajira Norimaki (voice)
