Children of the Sea
2019, Japanese. Directed by Ayumu Watanabe.
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.
- Runtime
- 1h 51m
- Post-credits
- None listed
- Language
- Japanese
- Rated
- NR
Start now and it ends at ….
Worth the Hype
Clear your evening for this.
7.1/10 from 361 TMDB viewer ratings.
Seen it? Give your verdict.
Saved privately on this device.
Where to watch Children of the Sea
Children of the Sea isn’t on a subscription OTT platform in India, but you can watch it free or rent it or buy it online.
Free
Hoopla
Apple TV Store
Google Play Movies
YouTubeAvailability in India as of 14 November 2026. Streaming data by JustWatch.
Cast & crew
- Ayumu WatanabeDirector
- Mana AshidaRuka Azumi (voice)
- Hiiro IshibashiUmi (voice)
- Seishu UragamiSora (voice)
- Win MorisakiAnglade (voice)
- Goro InagakiMasaaki Azumi (voice)
- Yu AoiKanako Azumi (voice)
- Tohru WatanabeTeacher (voice)
- Min TanakaJimu (voice)
- Sumiko FujiDede (voice)
- Shunsuke HiraiJean Louis (voice)
- Marie OoiFuyuko (voice)
- 渚Aki (voice)
Details
- Released
- 7 June 2019
- Original title
- 海獣の子供
- Country
- China, Hong Kong, Japan
- Written by
- Saku Konohana
Check ratings elsewhere
News & fan talk
What Children of the Sea is based on
Children of the Sea is based on Children of the Sea, a manga series by Daisuke Igarashi.
Manga series
Children of the Sea
By Daisuke Igarashi
Source details from Wikidata and TMDB.
If you liked Children of the Sea
Brave Story
2006 · 6.4/10
Popcorn FlickRecommended by TMDB viewers
Modest Heroes
2018 · 6.7/10
Popcorn FlickRecommended by TMDB viewers
Lonely Castle in the Mirror
2022 · 7.1/10
Worth the HypeRecommended by TMDB viewers
That Time I Got Reincarnated as a Slime the Movie: Tears of the Azure Sea
2026 · 8.0/10
Absolute CinemaRecommended by TMDB viewers
Mononoke the Movie: The Phantom in the Rain
2024 · 7.3/10
Worth the HypeRecommended by TMDB viewers
The Girl from the Other Side
2023 · 7.8/10
Worth the HypeRecommended by TMDB viewers
That Time I Got Reincarnated as a Slime the Movie: Scarlet Bond
2022 · 7.4/10
Worth the HypeRecommended by TMDB viewers
Children Who Chase Lost Voices
2011 · 7.2/10
Worth the HypeRecommended by TMDB viewers
Crayon Shinchan the Movie: Fast Asleep! The Great Assault on the Dreaming World
2016 · 6.6/10
Popcorn FlickRecommended by TMDB viewers
One Piece: Giant Mecha Soldier of Karakuri Castle
2006 · 6.9/10
Popcorn FlickRecommended by TMDB viewers
Children of the Sea: quick answers
Is Children of the Sea worth watching?
Our verdict is Worth the Hype: Clear your evening for this. It scores 7.1/10 from 361 TMDB viewer ratings.
How long is Children of the Sea?
Children of the Sea runs 111 minutes (1h 51m).
Does Children of the Sea have a post-credits scene?
None is listed for Children of the Sea. Viewers tag these on TMDB, so a brand-new film may not be tagged yet.
Children of the Sea parents guide: is it suitable for kids?
Children of the Sea is rated NR in India. Check the rating guidance before watching with young children.
Which OTT platform is Children of the Sea on?
Children of the Sea isn’t on a subscription OTT platform in India, but you can watch it free or rent it or buy it online. (Checked 14 November 2026.)
What movies are like Children of the Sea?
If you liked Children of the Sea, try Brave Story, Modest Heroes, Lonely Castle in the Mirror.
Who directed Children of the Sea?
Children of the Sea (2019) was directed by Ayumu Watanabe and stars Mana Ashida, Hiiro Ishibashi, Seishu Uragami.
What is Children of the Sea based on?
Children of the Sea is based on Children of the Sea, a manga series by Daisuke Igarashi.