The Silent Sea
고요의 바다
“A deserted Moon base. A deadly mission.”
We checked 8 streaming services in India on 04 Jun 2026 at 12:09 IST
About
During a perilous 24-hour mission on the moon, space explorers try to retrieve samples from an abandoned research facility steeped in classified secrets.
Cast
Bae Doona
as Song Ji-an
Gong Yoo
as Han Yun-jae
Lee Joon
as Ryu Tae-suk
Kim Sun-young
as Hong Ga-young
Lee Mu-saeng
as Gong Soo-hyuk
Lee Sung-wook
as Kim Hee-sun
Jung Soon-won
as Gong Soo-chan
Choi Young-woo
as Lee Ki-soo
Cha Rae-hyung
as E1
Yoo Hee-je
as E2
You Seong-joo
as Mr. Hwang
Kang Mal-geum
as Song Won-kyung
Kil Hae-yeon
as Director Choi
Heo Sung-tae
as Kim Jae-sun
Kim Si-a
as Luna
Choi Hee-jin
as NMC Doctor
Do Yeong-seo
as Han Ha-jin
Kang Ji-woo
as Young Song Ji-an
Gong Jin-seo
as Young Song Won-kyung
Seasons
Episodes
Season 1
Balhae Lunar Research Station
Director Choi's briefing about the mission leaves Song Ji-an displeased. Reaching the research station alone proves no easy feat for the crew.
Three Storages
The crew's initial findings are at odds with their knowledge of the research station. Split into threes, the members set out to look for the sample.
Cause of Death
Ji-an's body cam captures a startling moment of life and death. Submerged in sweat, Gong Soo-chan shows worrisome signs of an unusual infection.
The Truth Comes Out
Han Yun-jae updates the director and gets access to a restricted area. The crew learns of the sample's powers and the true motive behind their mission.
Secret Storage
Recalling her sister's encrypted message, Ji-an searches the database for Luna. A young intruder and a double-crosser emerge from the shadows.
Key to Salvation
E2, Ryu Tae-suk and the samples go missing. Seeing a familiar name on the intruder, Ji-an follows her down the vents for answers.
Luna
Ji-an opens a hard drive that chronicles Song Won-kyung's life and work on the station. Meanwhile, others uncover the remains of the experiment.
The Silent Sea
Racing against time as the research station falls under destruction, the surviving crew members decide on the fate of the mission — and their own.
Where does The Silent Sea rank today?
The Silent Sea is #1564 on the CineFlixo Daily Streaming Charts today.
- Highest: #1564
- Top 10: 0 days
- Top 100: 0 days
Watch The Silent Sea Online Free — All Episodes in HD
Looking for a place to watch The Silent Sea online for free? You've landed on the right page. The Silent Sea is a well-rated Coreano drama, sci-fi & fantasy, and mystery series from 2021 that you can stream right now on CineFlixo in high quality, no signup required.
About The Silent Sea
“A deserted Moon base. A deadly mission.”
During a perilous 24-hour mission on the moon, space explorers try to retrieve samples from an abandoned research facility steeped in classified secrets. Across 1 season and 8 episodes, originally airing on Netflix.
The Silent Sea Cast and Characters
The cast features Bae Doona (as Song Ji-an), Gong Yoo (as Han Yun-jae), Lee Joon (as Ryu Tae-suk), Kim Sun-young (as Hong Ga-young), and Lee Mu-saeng (as Gong Soo-hyuk). Their performances are a major reason The Silent Sea has built such a passionate audience.
Where to Watch The Silent Sea Online
CineFlixo lets you stream The Silent Sea online free, instantly, in HD. There's nothing to install — open the page, hit play, done. Works perfectly on Jio, Airtel, Vi networks across India and on slow mobile data thanks to our adaptive video pipeline.
▶ Watch The Silent Sea NowWhy People Are Watching The Silent Sea
There's a reason The Silent Sea keeps showing up on "must-watch" lists. What makes it work is emotional weight that hits where it counts, tight pacing that earns its twists, and world-building that respects the audience's intelligence. If you enjoy Coreano storytelling that doesn't follow the same tired beats, this is the kind of show you'll end up recommending to friends.
Frequently Asked Questions about The Silent Sea
Where can I watch The Silent Sea online for free?
You can watch The Silent Sea online free on CineFlixo. Just open the page and hit play — no signup, no subscription, full HD streaming on phone, tablet, or desktop.
How many episodes does The Silent Sea have?
The Silent Sea has 8 episodes across 1 season. All episodes are available to stream right here on CineFlixo.
Is The Silent Sea good? What's the rating?
The Silent Sea holds a 7.6/10 rating based on 701 reviews — well above average.
Who is in the cast of The Silent Sea?
The main cast includes Bae Doona, Gong Yoo, Lee Joon, and Kim Sun-young, plus a strong supporting ensemble.
Is The Silent Sea available in Coreano?
Yes — The Silent Sea was originally produced in Coreano and that's the version you'll stream here on CineFlixo. English subtitles are provided when available.
When was The Silent Sea released?
The Silent Sea first aired in 2021.
Do I need an account to watch The Silent Sea on CineFlixo?
No. CineFlixo is free and you can watch The Silent Sea without creating an account. Sign-up is optional — only useful if you want a personal Watchlist or to comment on episodes.
Similar Series You Might Like
If you enjoyed The Silent Sea, check out Planet of the Apes, Star Wars: Droids, Jeremiah, Space: 1999, and Thriller.
Frequently Asked Questions
Where can I watch The Silent Sea for free?
You can watch The Silent Sea online for free on CineFlixo. All 8 episodes across 1 season are available to stream in HD without a subscription, signup, or paywall. Just open the show page and press play.
How many seasons and episodes does The Silent Sea have?
The Silent Sea currently has 1 season and a total of 8 episodes. The series status is "Ended", so the episode count may grow as new seasons are released. You can browse the full episode list on CineFlixo and continue watching from where you left off.
What is The Silent Sea about?
During a perilous 24-hour mission on the moon, space explorers try to retrieve samples from an abandoned research facility steeped in classified secrets. It belongs to the Drama, Sci-Fi & Fantasy, Mystery genres.
In which language is The Silent Sea originally available?
The Silent Sea was originally produced in KO. On CineFlixo the show is available in its original KO audio. Check the player options on the watch page for available subtitle tracks.
When was The Silent Sea first released?
The Silent Sea first premiered on December 24, 2021 (2021). The series has since concluded its run.
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