The Sea Unseen poster
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The Sea Unseen

20251h 45mMovieDrama

We see this when painfully shy protag Yoshino decamps from her isolated Tokyo life to visit the historic town of Ueda in Nagano Prefecture – so historic that complete fossils are found (!). While staying at a guest house that doubles as a…

DirectorSaki Katô

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The Sea Unseen was released on August 23, 2025 but we couldn't find it on any streaming service yet. Rights can change — try again later.

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Cast · Directed by Saki Katô

AKAkemi Kanda
Akemi Kanda
SKSaki Katô
Saki Katô
HTHaruka Toyoshima
Haruka Toyoshima
KK
Keita Kamaguchi
AY
Ayako Yukawa

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The Sea Unseen — streaming FAQ

Which OTT platform streams The Sea Unseen?

The Sea Unseen isn't streaming anywhere in United States yet.

Is The Sea Unseen on Netflix?

No, The Sea Unseen is not on Netflix in United States as of September 2026.

Is The Sea Unseen on Amazon Prime Video?

No, The Sea Unseen isn't on Amazon Prime Video in United States right now.

Where can I watch The Sea Unseen for free?

The Sea Unseen isn't streaming in United States yet, so there's no way to watch it free at the moment.

What is the OTT release date for The Sea Unseen?

The Sea Unseen hasn't started streaming in United States yet. Based on the typical 6–8 week theatrical-to-streaming window, we estimate it will arrive around October 11, 2025. This is a prediction, not a confirmed date.