This Boy Caught a Merman poster
Where to stream

This Boy Caught a Merman

5.6201228mMovieFantasyAnimationRomance

When Shima nearly drowns trying to retrieve a picture, he’s saved by a merman named Isaki. Despite their differences, they begin to bond, but love across species isn’t simple.

Where to watch

Not available in United Kingdom
Streaming in 1 other country

This Boy Caught a Merman isn't on any streaming service in United Kingdom right now, but it's available in Japan. Streaming rights are licensed per country.

Cast · Directed by Soubi Yamamoto

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More from CoMix Wave Films · Studio

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This Boy Caught a Merman — streaming FAQ

Which OTT platform streams This Boy Caught a Merman?

This Boy Caught a Merman isn't on any streaming service in United Kingdom yet, but it's available in Japan. Streaming rights differ by country — switch your country in the header to see where.

Is This Boy Caught a Merman on Netflix?

No, This Boy Caught a Merman is not on Netflix in United Kingdom as of September 2026.

Is This Boy Caught a Merman on Amazon Prime Video?

No, This Boy Caught a Merman isn't on Amazon Prime Video in United Kingdom right now.

Where can I watch This Boy Caught a Merman for free?

This Boy Caught a Merman isn't streaming in United Kingdom yet, so there's no way to watch it free at the moment.

Is there a sequel to This Boy Caught a Merman?

Yes — This Boy Caught a Merman is followed by This Boy Suffers from Crystallization (2014) in the KonoDan Collection.

Is there a prequel to This Boy Caught a Merman?

Yes — This Boy Can Fight Aliens (2011) comes before This Boy Caught a Merman in the KonoDan Collection.

Is This Boy Caught a Merman part of a trilogy?

Yes — This Boy Caught a Merman is part of a trilogy, alongside This Boy Can Fight Aliens (2011) and This Boy Suffers from Crystallization (2014).

How many movies are in the KonoDan Collection?

There are 3 films in the KonoDan Collection: This Boy Can Fight Aliens (2011), This Boy Caught a Merman (2012) and This Boy Suffers from Crystallization (2014).