The Silent Sea (2021)
A gripping Korean sci-fi thriller set on the moon, where a covert mission unravels deadly secrets buried inside an abandoned lunar research station.
The Silent Sea - Series Information
- Original Title: 고요의 바다
- First Air Year: 2021
- Last Air Year: 2021
- Created by: Park Eun-kyo, Choi Hang-yong
- Type: TV Series
- Genres: Drama, Sci-Fi, Fantasy, Mystery
- Content Rating (US): TV-MA
- Episode Runtime: Average runtime per episode: 45 minutes
- Number of Seasons: 1
- Number of Episodes: 8
- Status: Ended
- Original Language: Korean
- Spoken Languages: Korean
- First Air Date: December 24, 2021 (United States - TV-MA), December 24, 2021 (Germany - 16), December 24, 2021 (France - 16), December 24, 2021 (Australia - MA15+), December 24, 2021 (Brazil - 16), December 24, 2021 (Spain - 16), December 24, 2021 (South Korea - 15)
- Networks: Netflix
- Production Companies: Artist Company, Artist Studio
- Production Countries: South Korea
- Alternative Titles: 寂静之海 (CN), ทะเลสงัด (TH), Mar de la tranquilidad (CO), The Silent Sea (DE), 宁静海 (HK), The Silent Sea (US), Durgun Deniz (TR), 宁静海 (TW)
The Silent Sea - Plot
During a perilous 24-hour mission on the moon, space explorers try to retrieve samples from an abandoned research facility steeped in classified secrets.
The Silent Sea - Trailer
Watch the official trailer and see the tension of the lunar mission unfold:
A deserted Moon base. A deadly mission.
Where to Watch The Silent Sea
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The Silent Sea - Cast & Crew
Creator(s)
- Park Eun-kyo
- Choi Hang-yong
Main Cast
- Bae Doona
- Gong Yoo
- Lee Joon
- Kim Sun-young
- Lee Mu-saeng
- Lee Sung-wook
- Jung Soon-won
- Choi Young-woo
- Cha Rae-hyung
- Yoo Hee-je
Writers
- Park Eun-kyo
Executive Producers
- Jung Woo-sung
The Silent Sea - FAQs
Is The Silent Sea based on a short film?
Yes. The Silent Sea is adapted from director Choi Hang-yong's 2014 short film of the same name. The short won recognition at several festivals and served as the creative foundation for the expanded Netflix series, preserving its core premise of a covert lunar mission.
What is the ending of The Silent Sea explained?
In the finale, Luna — a girl engineered to survive on lunar water — escapes Earth's authoritarian water rationing system. Song Ji-an helps Luna reach the moon, where she represents hope for humanity's survival. The ending is deliberately open, suggesting a new chapter rather than a definitive resolution.
Where can you stream The Silent Sea?
The Silent Sea is available exclusively on Netflix, including the Netflix Standard with Ads tier. It is accessible in most regions where Netflix operates. You can check full regional streaming availability and compare viewing options via JustWatch.
Who are the lead actors in The Silent Sea?
The series stars Bae Doona as astrobiologist Song Ji-an and Gong Yoo as team captain Han Yun-jae. The supporting cast includes Lee Joon, Kim Sun-young, Lee Mu-saeng, Lee Sung-wook, and Kim Si-a as the enigmatic Luna.
What is The Silent Sea about?
Set in a near-future Earth ravaged by drought, The Silent Sea follows a team of astronauts on a 24-hour mission to retrieve mysterious samples from an abandoned lunar research station. As they investigate, they uncover deadly classified secrets that challenge the fate of humanity.
How many episodes does The Silent Sea have?
The Silent Sea consists of 8 episodes across its single season, each running approximately 45 minutes. The entire season was released simultaneously on Netflix on December 24, 2021, making it ideal for binge-watching over a weekend.
Did The Silent Sea win any awards?
The Silent Sea received nominations at the 58th Baeksang Arts Awards, including recognition for its production design and cast performances. The series was praised internationally for its visual ambition and tight sci-fi storytelling, raising the profile of Korean genre television globally.
Is The Silent Sea worth watching for sci-fi fans?
Absolutely. The Silent Sea delivers a tense, atmospheric sci-fi thriller anchored by strong performances from Bae Doona and Gong Yoo. Its compact 8-episode format keeps the pacing sharp, and its themes of resource scarcity, human ethics, and survival give it genuine dramatic weight beyond genre thrills.
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