Children of the Sea (2019)
Kernel Score: 77% · 334 ratings · Rated NR
Genres: Animation, Fantasy, Adventure, Mystery
Released: 2019-06-07
Runtime: 111 minutes
Where to watch Children of the Sea
- Free with ads: Hoopla
- Rent: Apple TV, Google Play, YouTube
- Buy: Apple TV, Google Play, YouTube
US availability, updated 2026-10-23.
Overview
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.
Children of the Sea parents' guide: ages 8+
Parents need to know that this NR anime fantasy is a mystery-adventure about a girl's supernatural connection to the sea, with mild fantastical elements.
Fresh Kernels AI-assessed from the official NR rating, publicly documented content. A guide for families, not an official rating.
Movies like Children of the Sea
If you liked Children of the Sea, these are the movies we'd watch next.
- Children Who Chase Lost Voices (2011) — 80%
- Angel's Egg (1985) — 88%
- Waking Life (2001) — 85%
- Kizumonogatari Part 2: Nekketsu (2016) — 89%
- Kizumonogatari Part 3: Reiketsu (2017) — 90%
- KONOSUBA – God's blessing on this wonderful world! Legend of Crimson (2019) — 90%
- The Little Prince (2015) — 85%
- Avatar: Aang, The Last Airbender (2026) — 89%
Director
Ayumu Watanabe
Cast
- 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)
- Yu Aoi as Kanako Azumi (voice)
- Tohru Watanabe as Teacher (voice)
- Min Tanaka as Jimu (voice)
- Sumiko Fuji as Dede (voice)
Children of the Sea FAQ
Is Children of the Sea good?
Children of the Sea has a 77% Kernel Score on Fresh Kernels from 334 audience ratings.
Where can I watch Children of the Sea?
In the US you can watch it free with ads on Hoopla and rent it from Apple TV, Google Play and YouTube.
Is Children of the Sea OK for kids?
Children of the Sea is rated NR. Fresh Kernels suggests ages 8+. Parents need to know that this NR anime fantasy is a mystery-adventure about a girl's supernatural connection to the sea, with mild fantastical elements.
What movies are like Children of the Sea?
If you liked Children of the Sea, try Children Who Chase Lost Voices, Angel's Egg, Waking Life and Kizumonogatari Part 2: Nekketsu.