NoBadPicks

Movies Like Guinea Pig: Mermaid in the Manhole

If you loved Guinea Pig: Mermaid in the Manhole's Horror and Romance storytelling, these films deliver a similar experience — carefully selected for tone, themes, and emotional depth. Each pick includes where to watch it right now.

Top Picks

Mermaid Down
6.5

Mermaid Down

2019

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.

Splash
6.3

Splash

1984

A successful businessman falls in love with the girl of his dreams. There's one big complication though; he's fallen hook, line and sinker for a mermaid.

Aquamarine
6.5

Aquamarine

2006

Two teenage girls discover that mermaids really do exist after a violent storm washes one ashore. The mermaid, a sassy creature named Aquamarine, is determined to prove to her father that real love exists, and enlists the girls' help in winning the heart of a handsome lifeguard.

Fifty Shades Darker
6.5

Fifty Shades Darker

2017

When a wounded Christian Grey tries to entice a cautious Ana Steele back into his life, she demands a new arrangement before she will give him another chance. As the two begin to build trust and find stability, shadowy figures from Christian’s past start to circle the couple, determined to destroy their hopes for a future together.

The Love Witch
6.4

The Love Witch

2016

A modern-day witch uses spells and magic to get men to fall in love with her, with deadly consequences.

Cold Fish
6.9

Cold Fish

2011

When fish shop owner Shamoto's teenage daughter Mitsuko is caught stealing, a generous middle-aged man named Murata helps resolve the situation. The man and his wife offer to have Mitsuko work at their opposing fish store. Shamoto soon discovers that something far more sinister lives behind Murata's friendly demeanor.

Ondine
6.4

Ondine

2010

On the coast of Cork, Syracuse is a divorced fisherman who has stopped drinking. His precocious daughter Annie has failing kidneys. One day, he finds a nearly-drowned young woman in his net; she calls herself Ondine and wants no one to see her. He puts her up in an isolated cottage that was his mother's. Annie discovers Ondine's presence and believes she is a selkie, a seal that turns human while on land. Syracuse is afraid to hope again.

Lake of Dracula
6.7

Lake of Dracula

1971

A young girl suffers a terrifying nightmare of a vampire with blazing golden eyes. Eighteen years later, it is revealed to be a hellish prophecy when a strange package containing an empty coffin mysteriously turns up at a nearby lake.

More Movies Like Guinea Pig: Mermaid in the Manhole

Your Monster
6.5

Your Monster

2024

After her life falls apart, soft-spoken actress Laura Franco finds her voice again when she meets a terrifying, yet weirdly charming, monster living in her closet.

The Rule of Jenny Pen
6.2

The Rule of Jenny Pen

2025

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.

Eradication
6.1

Eradication

2022

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 a shadowy agency hunting them down.

The Fearless Vampire Killers
6.9

The Fearless Vampire Killers

1967

A noted professor and his dim-witted apprentice fall prey to their inquiring vampires, while on the trail of the ominous damsel in distress.

Night Tide
6.4

Night Tide

1961

A young sailor falls in love with a mysterious woman performing as a mermaid on the local pier. As they become entwined, he comes to suspect the woman might be a real mermaid who lures men to a watery death during the full moon. Preserved by the Academy Film Archive in partnership with The Film Foundation in 2007.

Maniac
6.1

Maniac

1963

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.

Together
7.0

Together

2025

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 encounter with a mysterious, unnatural force threatens to corrupt their lives, their love, and their flesh.

A Return to Salem's Lot
5.9

A Return to Salem's Lot

1987

Anthropologist Joe Weber takes his son on a trip to the New England town of Salem's Lot, unaware of its vampire population. When the inhabitants reveal their secret, they seek Weber to write a bible for them.

Don't Be Afraid of the Dark
5.8

Don't Be Afraid of the Dark

2010

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.

Play Dead
6.1

Play Dead

2022

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 using the corpses for his sick and twisted business, and when he realises that Chloe still has a pulse, a terrifying game of cat and mouse ensues.

Bloodline Killer
5.8

Bloodline Killer

2024

Moira Cole endeavors to rebuild her shattered life after her family's murder at the hands of her deranged and obsessed cousin.

Tomie: Rebirth
7.2

Tomie: Rebirth

2001

Young art student Hideo paints an unnerving portrait of Tomie, who whispers that she loves him. Inexplicably, he reacts by stabbing her to death with a painting trowel. Two friends, Takumi and Shunichi, arrive on the scene and help him dispose of the body. To cheer him up, the boys take the unwitting murderer to the nearest bar for a party... but a mysterious girl named Tomie shows up, bearing a few odd physical resemblances to the dead girl in the ground.

Why These Movies Are Similar

These recommendations share core qualities with Guinea Pig: Mermaid in the Manhole (1988): Horror and Romance themes, similar narrative structure, and comparable emotional depth. NoBadPicks uses a combination of TMDB collaborative filtering, genre matching, and AI analysis to surface films most likely to resonate with fans of Guinea Pig: Mermaid in the Manhole.

See full details for Guinea Pig: Mermaid in the Manhole (1988)

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