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The Silent Sea korean drama review
Completed
The Silent Sea
0 people found this review helpful
by Kadi_P
Jun 11, 2025
8 of 8 episodes seen
Completed
Overall 8.5
Story 6.5
Acting/Cast 6.5
Music 8.0
Rewatch Value 5.0
This review may contain spoilers
I love this show because I’m a big sucker for sci-fi and I love the poisoned water concept. There’s a Doctor Who episode called The Waters of Mars, there’s a TV show called The Rain and a book called The Rain (or H2O) and I’ve read/watched them all and love the concept.

But upon my second watching of this show I have noticed an insane amount of plotholes that genuinely make no sense.
1. Why was there so much water at the end? Yes there was a lot of water in the underground sector like 1000 containers of 100ml each and there was a dying guy, but it couldn’t have multiplied to enough to fill the entire base which is huge.
2. In the flashback we can see the water temperature regulation depressurised but we don’t see the water containers leaking like in the present. The assumption is that the water must have leaked like it did in the present which begs the question, where did the water go? Because when the crew turn up there’s no puddles of water. Alternatively if the water didn’t leak then why didn’t it? Not very consistent.
3. Why were all the dead bodies perfectly preserved after 5 years? Maybe the answer to this is that the water preserves the bodies? It seems like the water stops multiplying once they’re dead but it still remains in their body because it passed onto Soochan when he accidentally touched one of the dead bodies. Bit conflicting there.
4. Why would the evil Korean NASA suddenly shut down the base and kill all the researchers? They had actually achieved what they wanted to with Luna. This was never explained and doesn’t make any sense because it wasn’t like any other country knew what was going on, so there was no need to kill all the base people or hide it at that time. If anything, they just drew more attention to it.
5. The final bad guy showed in the flashback that he was part of the team that originally killed the researchers. If they were there why didn’t they just take the research and then kill them? Such a wasted trip.
6. The sister seemed to know the science centre were evil because she sent a message to her sister to find Luna and had time to delete the data. If she had those suspicions you think she would’ve tried to give her sister more information or stop the evil science guys.
7. There was always this talk of keeping the water stable but they never really explained what would happen if it was unstable. It had all the properties of water, so it was already liquid!
8. Why can Luna breathe outside on the moon? It makes no sense as to her water-based abilities. They just crazy overpowered her for nothing.
9. If the science guys were so evil to kill everyone the first time around then why did they send a ship to pick up the survivors and Luna now? They didn’t seem to want to preserve Luna before so what’s changed? Literally nothing because the Earth situation is still the same and still no one outside knows what’s happened on the base so they could’ve just left them there.
10. Where was the last bad guy’s bad guy ship? Surely it should’ve been there to pick him up.
11. At the end the water blasted out of the base and immediately froze, so how does the Captain end up miles away from the base and intact and still alive? It makes no sense. Either he should’ve been still inside the base, frozen at the entrance of the base, or dead because he was flung so far with such force.

I’m sure there are more plot holes but these are just a few that came to mind!

I still found it enjoyable to rewatch but the issues were really glaring the second time round. Everyone’s acting was great but nobody apart from the main protagonist had any character progression and they were all 2D pasted characters. The last episode killed me with the lack of urgency from the characters. There’s literally a sea of deadly water surging towards you and you’re all taking time to stand around and look sadly at each person who died. I was screaming at my screen like hurry up and move on! It really undercut the intensity of the last few scenes.
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