The Blue Sea
더블루씨
We checked 8 streaming services in India on 04 Jun 2026 at 16:14 IST
About
An action drama that tells the story of a mysterious young man who lost his memory. Jo Eun Hee is a female soldier in the navy who works with Sung Ki Soo to carry out special missions under UDU (Underwater Demolitions Unit) Sung Ki Soo is a navy lieutenant who is also a professor at the non-commissioned officer department who is the first to see through the identity of the young man who lost is memory.
Cast
Seasons
Episodes
Season 1
Episode 1
"The blue sea" is an action drama that tells the story of a mysterious young man who lost his memory. Jo Eun Hee is a female soldier in the navy who works with Sung Ki Soo to carry out special missions under UDU (Underwater Demolitions Unit) Sung Ki Soo is a navy lieutenant who is also a professor at the non-commissioned officer department who is the first to see through the identity of the young man who lost is memory.
Episode 2
Episode 3
Episode 4
Episode 5
Where does The Blue Sea rank today?
The Blue Sea is #10000 on the CineFlixo Daily Streaming Charts today.
- Highest: #10000
- Top 10: 0 days
- Top 100: 0 days
Watch The Blue Sea Online Free — All Episodes in HD
Stream The Blue Sea online free in HD on CineFlixo. A talked-about action & adventure and comedy series originally produced in Coreano and released in 2017, it's earned a solid 5.5/10 from 2 viewers worldwide.
About The Blue Sea
An action drama that tells the story of a mysterious young man who lost his memory. Jo Eun Hee is a female soldier in the navy who works with Sung Ki Soo to carry out special missions under UDU (Underwater Demolitions Unit) Sung Ki Soo is a navy lieutenant who is also a professor at the non-commissioned officer department who is the first to see through the identity of the young man who lost is memory. Across 1 season and 5 episodes, originally airing on NAVER TV.
The Blue Sea Cast and Characters
The cast features Jeong Ye-in (as Jo Hae-ji), Jo Ki-sung (as Jung Cha-ki), and Koo Ja-sung (as Sung Ki-su). Their performances are a major reason The Blue Sea has built such a passionate audience.
Where to Watch The Blue Sea Online
On CineFlixo you can watch The Blue Sea free — no account, no credit card, no ads in the middle of the show. We stream the full series in 720p / 1080p HD, with subtitles when available, on any device: phone, tablet, laptop, or smart TV browser.
▶ Watch The Blue Sea NowWhy People Are Watching The Blue Sea
The Blue Sea flies under the radar but it deserves your attention. What makes it work is sharp comedic timing that lands consistently and action sequences that don't feel cheap. 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 Blue Sea
Where can I watch The Blue Sea online for free?
You can watch The Blue 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 Blue Sea have?
The Blue Sea has 5 episodes across 1 season. All episodes are available to stream right here on CineFlixo.
Is The Blue Sea good? What's the rating?
The Blue Sea holds a 5.5/10 rating based on 2 reviews — a niche pick worth checking out.
Who is in the cast of The Blue Sea?
The main cast includes Jeong Ye-in, Jo Ki-sung, and Koo Ja-sung.
Is The Blue Sea available in Coreano?
Yes — The Blue 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 Blue Sea released?
The Blue Sea first aired in 2017.
Do I need an account to watch The Blue Sea on CineFlixo?
No. CineFlixo is free and you can watch The Blue 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 Blue Sea, check out Got to Believe, Search: WWW, Listening Snow Tower, Inday Bote, and Rewriting Destiny.
Frequently Asked Questions
Where can I watch The Blue Sea for free?
You can watch The Blue Sea online for free on CineFlixo. All 5 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 Blue Sea have?
The Blue Sea currently has 1 season and a total of 5 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 Blue Sea about?
An action drama that tells the story of a mysterious young man who lost his memory. Jo Eun Hee is a female soldier in the navy who works with Sung Ki Soo to carry out special missions under UDU (Underwater Demolitions Unit) Sung Ki Soo is a navy lieutenant who is also a professor at the non-commissioned officer depa… It belongs to the Action & Adventure, Comedy genres.
In which language is The Blue Sea originally available?
The Blue 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 Blue Sea first released?
The Blue Sea first premiered on October 9, 2017 (2017). The series has since concluded its run.
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