Kaijuu no Kodomo

Children of the Sea

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Alternative Titles

Synonyms: The Sea Monster's Children
Japanese: 海獣の子供
English: Children of the Sea
German: Children Of The Sea
Spanish: Los Niños del Mar
French: Les Enfants de La Mer
More titles


Type: Movie
Episodes: 1
Status: Finished Airing
Aired: Jun 7, 2019
Producers: None found, add some
Licensors: GKIDS
Studios: Studio 4°C
Source: Manga
Genres: Award WinningAward Winning, DramaDrama, MysteryMystery, SupernaturalSupernatural
Demographic: SeinenSeinen
Duration: 1 hr. 51 min.
Rating: PG-13 - Teens 13 or older


Score: 7.201 (scored by 3761937,619 users)
1 indicates a weighted score.
Ranked: #32032
2 based on the top anime page. Please note that 'Not yet aired' and 'R18+' titles are excluded.
Popularity: #1943
Members: 112,025
Favorites: 874

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Ranked #3203Popularity #1943Members 112,025
Add to My List
Episodes: /1


Ruka Azumi's ordinary summer vacation revolves around spending all her time on the handball court to avoid her only housemate, her alcoholic mother. When an incident at practice leads to Ruka's exclusion from the handball team, she is forced to find other outlets to enjoy herself, eventually winding up at the aquarium where her father works. There, she meets Umi, a mysterious boy raised by dugongs who is being kept at the aquarium in order to research his strange water-dependent body.

Ruka and Umi become fast friends, and the pair is soon joined by Sora, Umi's brother who also has an unusual relationship with the ocean. Together, the trio explore a dazzling undersea world while learning about a peculiar "festival" that all sea creatures around the world are preparing for.

[Written by MAL Rewrite]


Winner of the Grand Prize Award on the 23rd Japan Media Arts Festival.

Characters & Voice Actors


Uragami, Seishuu

Azumi, Ruka

Ashida, Mana


Ishibashi, Hiiro


Morisaki, Win

Cusack, Jim

Tanaka, Min


Fuji, Sumiko

Azumi, Kanako

Aoi, Yuu

Azumi, Masaaki

Inagaki, Gorou


Tanaka, Eiko
Watanabe, Ayumu
Director, Storyboard
Kasamatsu, Kouji
Sound Director
Kino, Hanasaki


Opening Theme

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Ending Theme


Jun 7, 2019
Breathtaking and seamless animation. I'm glad they translated Igarashi Daisuke's art to the big screen pretty well. The art and the soundtrack is absolutely beautiful and I'm also a sucker for animes with the ocean/summer days/ fantasy aesthetic themes (reminded me of the anime Nagi no Asukara). Seeing it on the big screen gave me that same chest expanding feeling whenever I see amazing animation alongside moving soundtracks.

Honestly, the storyline lost me a little bit but I'm not gonna say I wasn't entertained and absorbed. I would still highly recommend for the imagery. Can't wait until it is released in English to rewatch it!
Feb 25, 2020
Mixed Feelings
Studio 4°C is very much a formidable studio in term of animation. Their movies often have a creative art style with realistic character designs and a light cold tone of color choices. Therefore, it's always a treat watching their works. But sadly, I can't say that the stories they offered are just as inspiring. And unfortunately, Kaijuu no Kodomo or Children of the Sea, as beautiful as it may look, is not an exception.

Normally, this will be the part where I'm spoiling the story a little bit to help guiding the viewer into the anime. But this time, the story is just too incomprehensible ...
Mar 28, 2023
Kaijuu no Kodomo is the personification of a teenager smoking weed for the first time and spilling into incoherent babble about life and the universe. "Duuuuuuuuuuuuuude the seas and the stars are one... We're all, like, totally connected." Without any hint of self-awareness, prattling on about romantic-sounding yet entirely vacuous germs of ideas about "listening to the song on the winds," "we're all made of the same matter... whoaaaaaa..." and other such flowery, inconsequential drivel. The characters and plot are superficially there to laboriously drone on about shallow musings on life and the universe. What little there is in terms of ...

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Recent Forum Discussion

does Ruka Azumi end up with Umi??
neel_senpai - May 29
3 repliesby babel0790 »»
May 29, 3:42 PM
Poll: Kaijuu no Kodomo Episode 1 Discussion ( 1 2 )
Klonoa7H - Oct 14, 2019
70 repliesby AnimeBeckYor »»
Mar 13, 11:35 PM
Underrated anime?
YoMadrix - Oct 14, 2021
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Xeiros - Feb 26, 2019
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