Under Salt Marsh
Morfa Halen is a tight-knit Welsh town precariously nestled between towering mountains and a fast-encroaching sea that threatens its very existence. As a once-in-a-generation storm begins to gather far out at sea, former detective turned teacher Jackie Ellis discovers the body of her 8-year-old pupil, Cefin, seemingly drowned. The discovery sends shockwaves through the community, reviving the ghost of an unsolved cold case that rocked the town three years prior - the disappearance of Jackie’s niece, Nessa, which cost her career.
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Based on audience scoresWhere to stream Under Salt Marsh
Not streaming in the United States right now.
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Official Trailer
Official Teaser
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Frequently asked questions about Under Salt Marsh
Where can I watch Under Salt Marsh in the United States?
Under Salt Marsh is not streaming in the United States right now, though it is available in the United Kingdom, Canada, Australia, and India. Track it in Limelight to get a notification when it arrives on a service you pay for.
What are the ratings for Under Salt Marsh?
Under Salt Marsh scores 6.7 on The Movie Database.
Who stars in Under Salt Marsh?
Under Salt Marsh stars Kelly Reilly, Rafe Spall, Naomi Yang, Harry Lawtey, and Dino Fetscher. Claire Oakley is the creator.
How many seasons of Under Salt Marsh are there?
Under Salt Marsh has 1 season and 6 episodes, and is ended.
How long does it take to watch all of Under Salt Marsh?
All 6 episodes of Under Salt Marsh add up to about 6 hours at roughly 60 minutes each. At two hours a night that is about 3 evenings; at four hours a day it takes about 2 days.
What network is Under Salt Marsh on?
Under Salt Marsh airs on Sky One and Sky Atlantic, and is produced by Sky Studios and Little Door Productions.
Ratings and streaming availability are aggregated from third-party sources; metadata from The Movie Database (TMDB), streaming data from JustWatch. This product uses the TMDB API but is not endorsed or certified by TMDB. Streaming availability checked September 2026.