Children of the Sea

Name: Children of the Sea
Genre: Animation, Fantasy, Adventure, Mystery
Released: 2019-06-07
Duration: 1 h 51 min
Rating: 7.1
Cast: Mana Ashida, Hiiro Ishibashi, Seishu Uragami, Win Morisaki, Goro Inagaki

2019·Movie·NR·111 min·★ 7.1(343)

Animation Fantasy Adventure Mystery More Japanese titles

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.

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Where to watch Children of the Sea in United States

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Click a service to open Children of the Sea there. Availability last verified on June 20, 2026.

Where is Children of the Sea streaming around the world?

Country	Streaming on	Rent / Buy
United States	Hoopla	Apple TV Store, Google Play Movies, YouTube
United Kingdom	—	Apple TV Store, Amazon Video, Sky Store
Canada	Hoopla	Google Play Movies, YouTube, Apple TV Store
Australia	—	Amazon Video, Google Play Movies, YouTube
Germany	Amazon Prime Video, Amazon Prime Video with Ads	Apple TV Store, Amazon Video, Google Play Movies
France	—	Apple TV Store, Google Play Movies, Canal VOD
Spain	—	Amazon Video
Japan	Hulu, U-NEXT, Anime Times Amazon Channel	Apple TV Store, FOD, Amazon Video
South Korea	wavve, Watcha, TVING	wavve, Google Play Movies

About Children of the Sea

Children of the Sea is a 2019 Japanese-language animation, fantasy and adventure film directed by Ayumu Watanabe. The cast is led by Mana Ashida, Hiiro Ishibashi, Seishu Uragami. It has a runtime of 1h 51m. Viewers rate it 7.1/10 across 300 ratings. In United States, it is currently streaming on Hoopla.

Children of the Sea was produced by Beyond C., DMM.com, and Whateversmiles and made in China and Hong Kong. It was released on June 7, 2019, and carries a NR certification.

Director: Ayumu Watanabe
Writers: Saku Konohana
Release date: June 7, 2019
Original language: Japanese
Age rating: NR
Status: Released
Country: China, Hong Kong
Production: Beyond C., DMM.com, Whateversmiles

#friendship#aquarium#philosophy#supernatural#based on manga#seinen#anime

Children of the Sea cast & crew

Children of the Sea was directed by Ayumu Watanabe and written by Saku Konohana.

The cast features Mana Ashida as Ruka Azumi (voice), Hiiro Ishibashi as Umi (voice), Seishu Uragami as Sora (voice), Win Morisaki as Anglade (voice), Goro Inagaki as Masaaki Azumi (voice), and Yu Aoi as Kanako Azumi (voice).

Behind the camera, the score was composed by Joe Hisaishi and it was produced by Eiko Tanaka and Keiji Kameyama.

Is Children of the Sea worth watching?

Children of the Sea holds an audience score of 7.1/10 from 343 ratings, marking it as well-reviewed animation films.

At 1h 51m, it's a standard feature-length watch.

If you enjoy animation, fantasy, and adventure, Children of the Sea is worth a place on your watchlist.

How and where to watch Children of the Sea

In United States, you can stream Children of the Sea on Hoopla, or rent and buy it on Apple TV Store, Google Play Movies, and YouTube. Click any service above to open it directly.

Streaming rights change country by country and month by month, so the options above reflect United States today — switch your country at the top of the where-to-watch section to see availability elsewhere.