Children of the Sea
海獣の子供
Synopsis
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.
Trailers, Teasers & Extra Featurettes
Official promotional previews, behind-the-scenes footage, and exclusive clips.
CHILDREN OF THE SEA [Official US Trailer] - APRIL 20Official
Type: Trailer • Published 2020-02-18
Top Cast
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Release History & Theatrical Window
Sydney Film Festival
Festival / Special Debut
June 13, 2021
Wide Cinema Exhibition
September 1, 2020
Physical Home Media
Key Information & Fast Facts
- Director
- Ayumu Watanabe
- Screenplay & Story
- Saku Konohana
- Original Score
- Joe Hisaishi
- Original Title
- 海獣の子供
- Country of Origin
- China, Hong Kong, Japan
- Spoken Languages
- Japanese
- Runtime
- 1h 51m
- Production Studios
- Beyond C., DMM.com, Whateversmiles, Shogakukan, TOHO, SANKYO, PARCO, STUDIO4℃, Phoenix Entertainment Group, ORIX Investment, Wander Pictures
Creative Leadership & Key Crew
Ayumu Watanabe
Saku Konohana, Daisuke Igarashi
Joe Hisaishi
Kiyoshi Hirose
Eiko Tanaka, Keiji Kameyama, Masakazu Kubo, Keiji Ota, Kimihisa Tsutsui
Department Leadership Roster
Saku Konohana
Screenplay
Eiko Tanaka
Producer
Kiyoshi Hirose
Editor
Ayumu Watanabe
Director
Joe Hisaishi
Original Music Composer
Age Classification & Content Advisories
Official viewer rating standards and content warnings across international classification boards.
NR: Not Rated — Evaluated outside standard classification boards.
International Certification Matrix
Parental Guidance — Recommended for mature viewers.
FSK 6 — Restricted to viewers aged 6 and older.
Not Rated — Evaluated outside standard classification boards.
Production Stills & Gallery
Official cinematic photography and background stills for Children of the Sea.
Featured In Curated Collections
Editorial lists, community rankings, and cinematic collections featuring Children of the Sea.
Letterboxd's Top 250 Animated Films
Letterboxd's official Top 250 Animated Feature Films, ranked by average member rating. Letterboxd 官方 Top 250 最佳动画长片榜单： 根据平台用户的平均评分进行排序。入选影片必须为动画长片，且排除了无法独立观看的剧集衍生剧场版。 *(Updated via Automated ETL Pipeline: 2026-10-19 07:35:36 UTC+8)*
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Frequently Asked Questions About Children of the Sea
Quick factual answers about cast, synopsis, director, box office, and release information.
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.
Who directed Children of the Sea?
Children of the Sea was directed by Ayumu Watanabe.
Who stars in Children of the Sea?
The principal cast of Children of the Sea includes Mana Ashida, Hiiro Ishibashi, Seishu Uragami, Win Morisaki, Goro Inagaki.
When was Children of the Sea released and how long is it?
Children of the Sea was released in 2019 with a total runtime of 1h 51m.
Who composed the musical score for Children of the Sea?
The original motion picture soundtrack for Children of the Sea was composed by Joe Hisaishi.
Is Children of the Sea based on a book or true story?
Children of the Sea is adapted from the following source material: Comic Book: "Daisuke Igarashi".
What is the age rating and content advisory for Children of the Sea?
Children of the Sea holds official age classifications: AU: PG (Parental Guidance — Recommended for mature viewers.); DE: 6 (FSK 6 — Restricted to viewers aged 6 and older.); FR: TP; US: NR (Not Rated — Evaluated outside standard classification boards.).