The Silent Sea (2021)

Kernel Score: 86% · 675 ratings

Genres: Drama, Sci-Fi & Fantasy, Mystery

First aired: 2021-12-24

Seasons: 1 · 8 episodes

Where to watch The Silent Sea

US availability, updated 2026-10-22.

Overview

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 parents' guide: ages 12+

Parents need to know that The Silent Sea is a TV-MA Korean sci-fi thriller about space explorers investigating an abandoned moon research facility with classified secrets.

  • Violence & scariness: Some — The TV-MA rating and suspense/mystery keywords suggest tense, potentially intense scenes, though specifics are not detailed in available signals.

Fresh Kernels AI-assessed from the official TV-MA rating, publicly documented content. A guide for families, not an official rating.

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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

The Silent Sea FAQ

Is The Silent Sea good?

The Silent Sea has an 86% Kernel Score on Fresh Kernels from 675 audience ratings.

Where can I watch The Silent Sea?

In the US you can stream The Silent Sea on Netflix.

Is The Silent Sea OK for kids?

The Silent Sea is rated TV-MA. Fresh Kernels suggests ages 12+. Parents need to know that The Silent Sea is a TV-MA Korean sci-fi thriller about space explorers investigating an abandoned moon research facility with classified secrets.

What shows are like The Silent Sea?

If you liked The Silent Sea, try The Expanse, For All Mankind, The Institute and The 100.