Movies Like Guinea Pig: Mermaid in the Manhole

If you liked Guinea Pig: Mermaid in the Manhole (1988), a horror and romance movie directed by Hideshi Hino, here are 20 movies with a similar feel, based on TMDB's recommendations. Each one links to its cast, trailer and where it's streaming.

1
Mermaid Down (2019)
★ 6.4/10Also horror
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…
2
Monstrous (2022)
★ 5.9/10Also horror
Laura, traumatized by an abusive relationship, runs away from her former husband with her seven-year-old son Cody. But in their new, idyllic and remote sanctuary, they find they have another, bigger and more terrifying…
3
Eradication (2022)
★ 6.1/10Also horror
When an unknown disease wipes out most of the world’s population, a man with unique blood is isolated for study. Fearing for his wife’s safety, he breaks his quarantine – into a world overrun by monstrous Infected and…
4
Don't Be Afraid of the Dark (2010)
★ 5.8/10Also horror
A young girl sent to live with her father and his new girlfriend discovers creatures in her new home who want to claim her as one of their own.
5
The Blob (1988)
★ 6.9/10Also horror
In Arborville, California, three high school students try to protect their hometown from a gelatinous alien life form that engulfs everything it touches.
6
Together (2025)
★ 6.9/10Also horror and romance
Years into their relationship, Tim and Millie find themselves at a crossroads as they move to the country, abandoning all that is familiar in their lives except each other. With tensions already flaring, a nightmarish…
7
Strange Darling (2024)
★ 6.9/10Also horror
Nothing is what it seems when a twisted one-night stand spirals into a serial killer’s vicious murder spree.
8
Maniac (1963)
★ 6.2/10Also horror
When a stranger enters a quiet, country town and is seduced by a sensuous married woman he unwittingly finds himself at the centre of a storm of sexual guilt and murder.
9
They Reach (2020)
★ 6.8/10Also horror
In 1979, a young girl stumbles upon a possessed tape player. She unknowingly unleashes a demonic entity that haunts her family while slowly dragging the small town of Clarkston to Hell.
10
The Rule of Jenny Pen (2025)
★ 6.1/10Also horror
Confined to a secluded rest home and trapped within his stroke-ridden body, a former Judge must stop an elderly psychopath who employs a child's puppet to abuse the home's residents with deadly consequences.
11
Lust for a Vampire (1971)
★ 5.9/10Also horror
In 1830, the Karnstein heirs use the blood of an innocent to bring forth the evil that is the beautiful Mircalla - or as she was in 1710, Carmilla. The nearby Finishing School offers rich pickings not only in in the…
12
The Deliverance (2024)
★ 6/10Also horror
Ebony Jackson, a struggling single mother fighting her personal demons, moves her family into a new home for a fresh start. But when strange occurrences inside the home raise the suspicions of Child Protective Services…
13
The Banana Splits Movie (2019)
★ 6.5/10Also horror
A boy named Harley and his family attend a taping of The Banana Splits TV show, which is supposed to be a fun-filled birthday for young Harley and business as usual for Rebecca, the producer of the series. But things…
14
Shades of Desire (2023)
★ 6.5/10Also horror
After her twin sister Aubrey goes missing, Jennifer uncovers the scandalous, secret double-life that Aubrey leads - and that has put both of them in danger.
15
Night Tide (1961)
★ 6.4/10Also romance and horror
A young sailor is enamored with a mysterious woman performing as a mermaid on the local pier. As their existences become entwined, he comes to suspect the woman might be a real mermaid who lures men to a watery death…
16
Crimson Peak (2015)
★ 6.7/10Also horror and romance
In the aftermath of a family tragedy, an aspiring author is torn between love for her childhood friend and the temptation of a mysterious outsider. Trying to escape the ghosts of her past, she is swept away to a house…
17
Play Dead (2022)
★ 6.1/10Also horror
Criminology student Chloe fakes her own death to break into a morgue, in order to retrieve a piece of evidence that ties her younger brother to a crime gone wrong. Once inside, she discovers that a sadistic coroner is…
18
Haunted (1995)
★ 6.1/10Also horror and romance
Professor David Ash exposes false spiritulists and mediums. He is invited to Edbrook to resolve the fears and torments within its secretive family. Soon after arriving Ash begins to doubt his own senses, and watching…
19
Never Let Go (2024)
★ 6.1/10Also horror
As an evil takes over the world beyond their front doorstep, the only protection for a mother and her twin sons is their house and their family’s protective bond.
20
Tetsuo: The Iron Man (1989)
★ 7/10Also horror
A "metal fetishist", driven mad by the maggots wriggling in the wound he's made to embed metal into his flesh, runs out into the night and is accidentally run down by a Japanese businessman and his girlfriend. The pair…