A young girl is drawn into a mystery involving sealife around the world, in which two mysterious boys are somehow involved.


Ayumu Watanabe


Daisuke Igarashi (manga), Hanasaki Kino (screenplay)
2 wins & 2 nominations. See more awards »





Cast overview, first billed only:
Mana Ashida ... Azumi Ruka (voice)
Hiiro Ishibashi ... Umi (voice)
Seishû Uragami Seishû Uragami ... Sora (voice)
Win Morisaki ... Angurâdo (voice)
Anjali Gauld Anjali Gauld ... Ruka Azumi (voice)
Lynden Prosser ... Umi (voice)
Benjamin Niedens Benjamin Niedens ... Sora (voice) (as Benjamin Niewood)
Beau Bridgland Beau Bridgland ... Anglade (voice)
Marc Thompson Marc Thompson ... Masaaki Azumi / Additional Voices (voice)
Karen Strassman ... Kanako Azumi / Students (voice)
Wally Wingert ... Gym Teacher / Doctor / Additional Voices (voice)
Michael Sorich ... Jim Cusack / Additional Voices (voice)
Denise Lee ... Dehdeh (voice)
Josh Petersdorf ... Jean / Additional Voices (voice)
Christine Marie Cabanos ... Fuyuko / Students / Additional Voices (voice)


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.

Plot Summary | Add Synopsis

Plot Keywords:

aquarium | fish | beach | friendship | boat | See All (35) »


Not Rated | See all certifications »

Parents Guide:

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Did You Know?


When the movie was first announced to the public in February 2019, Airu Kubozuka was announced as the voice of Sora. However, in April 2019 it was announced that Kubozuka had dropped out of the role because his voice was in the process of breaking, making it impossible for him to voice the character consistently, and role had instead been taken on by Seishû Uragami. See more »


Dede: The wind contains all the memories of the sea. By replacing it with words, we created and passed on songs and poems. But with words you can only capture a tiny fraction of the wind - like sails.
See more »

Crazy Credits

There is a final scene after the end credits. See more »


Umi no yûrei
("Spirits of the Sea")
Lyrics, music and arrangement by Kenshi Yonezu
Orchestra arrangement by Yûta Bandoh (as Yûta Bandô) (Ensemble FOVE)
Performed by Kenshi Yonezu
(Sony Music Labels)
[Theme song]
See more »

User Reviews

Great scenario, with obscure story slots
11 December 2019 | by cafecat-25824See all my reviews

Beautiful scenario and great soundtrack. Bring out the mystic feeling of the deep sea. However, the story is quite difficult to understand, a bit obscure. The original comic is better about the storytelling.

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Japan | USA



Release Date:

2019 (USA) See more »

Also Known As:

Children of the Sea See more »


Box Office

Cumulative Worldwide Gross:

See more on IMDbPro »

Company Credits

Production Co:

Beyond C., Studio 4°C See more »
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Technical Specs


Sound Mix:

Dolby Digital



Aspect Ratio:

2.39 : 1
See full technical specs »

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