TMDB20191h 31mHorror / Fantasy / Mystery / Thriller

Mermaid Down

Name: Mermaid Down
Genre: Horror, Fantasy, Mystery, Thriller
Released: 2019-10-02
Duration: 91 min

They exist.

A mermaid is ripped from the ocean by a fishing crew only to be tortured and to have her tail cut off. A seemingly helpful stranger intervenes, but then locks her away in an institution for mentally disturbed young women, where no one believes she is a mermaid. With no way out, she is forced to count on her survival instincts, and fight for her life at all costs.

TMDB audience score

Based on 305 votes

Saved only on this device unless you sign in.

Availability in the UK

Where the story is waiting

Provider listings are supplied by JustWatch through TMDB. Verify pricing and availability before renting or subscribing.

Amazon Prime Videosubscription Amazon Prime Video with Adssubscription Amazon Prime Video Free with Adsads Amazon MX Playerads Apple TV Storerent Amazon Videorent Google Play Moviesrent Sky Storerent YouTuberent Apple TV Storebuy Amazon Videobuy Google Play Moviesbuy Sky Storebuy YouTubebuy

UK only · Refreshed 11 Oct 2026.

MyCinema quick facts

Mermaid Down at a glance

Worked out from the film's TMDB record and its United Kingdom provider listings. These are facts about the data, not a review.

Runtime

Standard length · 1h 31m

At 1h 31m it sits between 90 minutes and two hours.

Genres

Horror · Fantasy · Mystery · Thriller

TMDB files it under horror, fantasy, mystery, and thriller.

UK availability

2 subscriptions · 2 free · 5 to rent · 5 to buy

Included with 2 subscription services: Amazon Prime Video and Amazon Prime Video with Ads. Free or ad-supported on Amazon Prime Video Free with Ads and Amazon MX Player. Listed to rent from 5 stores. Listed to buy from 5 stores.

TMDB audience score

6.4 / 10 on TMDB

TMDB users rate it 6.4 out of 10 across 305 votes, a positive audience score. That is a moderate sample of voters.

Why watch Mermaid Down tonight

It is a regular evening's length at 1h 31m.
It is included with Amazon Prime Video and Amazon Prime Video with Ads in the UK, so there is no rental fee if you already subscribe.
TMDB users rate it 6.4 out of 10 across 305 votes.
There is a trailer on this page if you want a look first.