Movie guide
Children of the Sea (2019): movie guide
Children of the Sea (2019) is a Animation, Fantasy, Adventure running about 111 minutes. It holds a TMDB score of 7.1/10 from 361 votes. Notable cast includes Mana Ashida, Hiiro Ishibashi, Seishu Uragami, Win Morisaki. Cinema Box covers trailers, cast, and details for discovery — not full streaming.
- Released: 2019-06-07
- Runtime: 111 min
- TMDB: 7.1/10
- Genres: Animation, Fantasy, Adventure
Last updated: 2026-11-11 · First listed: 2019-06-07
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What is Children of the Sea about?
Ruka is a young girl whose parents are separated and whose father works in an aquarium. When two boys, Umi and Sora, who were raised in the sea by dugongs, are brought to the aquarium, Ruka feels drawn to them and begins to realize that she has the same sort of supernatural connection to the ocean that they do. Umi and Sora's special power seems to be connected to strange events that have been occurring more and more frequently, such as the appearance of sea creatures far from their home territory and the disappearance of aquarium animals around the world. However, the exact nature of the boys' power and of the abnormal events is unknown, and Ruka gets drawn into investigating the mystery that surrounds her new friends.
Cast highlights
Children of the Sea features Mana Ashida, Hiiro Ishibashi, Seishu Uragami, Win Morisaki, Goro Inagaki, Yu Aoi. Open the Cinema Box title page for the full cast list and character credits.
Key facts
Release date: 2019-06-07. Runtime: 111 minutes. TMDB score: 7.1/10 (361 votes). Genres: Animation, Fantasy, Adventure, Mystery. Original language: ja. Status: Released.
Discover Children of the Sea on Cinema Box
Cinema Box is a movie and TV discovery app for Android. Use it to browse Children of the Sea, watch official trailers when available, save titles to your list, and plan what to watch — without hosting or streaming full films.
Frequently asked questions
- What genre is Children of the Sea?
- Children of the Sea is listed as Animation, Fantasy, Adventure, Mystery on TMDB.
- How long is Children of the Sea?
- Children of the Sea runs about 111 minutes.
- Who stars in Children of the Sea?
- Cast highlights include Mana Ashida, Hiiro Ishibashi, Seishu Uragami, Win Morisaki, Goro Inagaki, Yu Aoi.
- Does Cinema Box stream Children of the Sea?
