Sea Fever(2020)
2020 · Neasa Hardiman · 95 min
The crew of a West of Ireland trawler—marooned at sea—struggle for their lives against a growing parasite in their water supply.
Thriller · Horror · Drama · Science Fiction · Mystery
6.1645 votes
TMDB score
3/5
Intensity
2/5
Gore
3/5
Stays with you
How Sea Fever scares
There's a slow, tightening sense of dread that builds as a small crew realizes something is wrong with their boat and their water, and the fear comes more from isolation and paranoia than from sudden shocks. The pacing is patient and quiet, letting the vastness of the ocean and the crew's growing distrust of each other do most of the work. It leans into body-horror unease and survival panic rather than gore, with a science-driven, almost believable creature threat instead of anything supernatural. Good for people who like moody, thoughtful horror over loud scares.
On The Horror Database's 0–5 scare profile, Sea Fever rates psychological 4/5, visceral 3/5, gore 2/5, lingering effect 3/5, and overall intensity 3/5.
- Psychological: 4 of 5
- Visceral: 3 of 5
- Gore: 2 of 5
- Lingering: 3 of 5
- Intensity: 3 of 5
Slow burn vs Jump scares: 10 of 100 — leans Slow burn
Supernatural vs Real-world: 30 of 100 — leans Supernatural
Fun-scary vs Disturbing: 45 of 100 — balanced
Intensity over runtime
Shape only — no eventsReveal pacing shapeHide pacing shapeHidden by default — shows where the tension peaks and lets up.
A slow-building slow-burn that gradually tightens into mounting dread and a tense, sober final stretch rather than nonstop shocks.
Intensity across the runtime, 0 to 100: 0, 1, 1, 2, 2, 3, 3, 3, 4, 4, 3, 2.
How scary is Sea Fever?
On The Horror Database's 0–5 intensity scale, Sea Fever rates 3/5 — solidly scary, building its fear through slow-burn dread rather than shocks. It works on both fronts, unsettling the mind while going for the body. Expect it to be moderately gory and scary but not punishing. Some of it will follow you to bed, but it lets go within a day or so.
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