Guinea Pig: Mermaid in the Manhole
1988, Japanese. Directed by Hideshi Hino.
An artist dealing with the grief of his wife leaving him finds solace in painting the squalor of the sewer. He discovers a trapped mermaid, whom he brings home to heal. Her condition worsens, and she asks the artist to paint her before she dies.
- Runtime
- 0h 58m
- Post-credits
- None listed
- Language
- Japanese
- Rated
- Check local
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Snoozefest
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5.4/10 from 74 TMDB viewer ratings.
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Where to watch Guinea Pig: Mermaid in the Manhole
Guinea Pig: Mermaid in the Manhole isn’t streaming on any OTT platform in India yet; it released on 25 July 1988.
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Part of a series
Guinea Pig: watch order
Cast & crew
Details
- Released
- 25 July 1988
- Original title
- ザ・ギニーピッグ マンホールの中の人魚
- Country
- Japan
- Written by
- Hideshi Hino
- Budget
- $5.5K
Check ratings elsewhere
News & fan talk
Watch before Guinea Pig: Mermaid in the Manhole
In release order. The films it follows, and anything it builds on.
Guinea Pig: Devil's Experiment
1985 · 4.8/10
SnoozefestEarlier in the series
Guinea Pig Part 2: Flower of Flesh and Blood
1985 · 4.6/10
SnoozefestEarlier in the series
Guinea Pig Part 3: He Never Dies
1986 · 4.3/10
SnoozefestEarlier in the series
Guinea Pig Part 4: Devil Doctor Woman
1986 · 4.4/10
SnoozefestEarlier in the series
After Guinea Pig: Mermaid in the Manhole
What comes next in the series.
If you liked Guinea Pig: Mermaid in the Manhole
Slime City
1988 · 4.9/10
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Biotherapy
1986 · 6.1/10
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Junk
2000 · 4.7/10
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1989 · 7.0/10
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Deadly Eyes
1982 · 5.6/10
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Strange Circus
2005 · 7.2/10
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The Toxic Avenger Part II
1989 · 5.4/10
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964 Pinocchio
1991 · 6.0/10
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Tomie: Another Face
1999 · 5.2/10
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1981 · 7.3/10
Worth the HypeFans watch both
Guinea Pig: Mermaid in the Manhole: quick answers
What should I watch before Guinea Pig: Mermaid in the Manhole?
Watch Guinea Pig: Devil's Experiment (1985), Guinea Pig Part 2: Flower of Flesh and Blood (1985), Guinea Pig Part 3: He Never Dies (1986), and Guinea Pig Part 4: Devil Doctor Woman (1986) first.
What comes after Guinea Pig: Mermaid in the Manhole?
Next in the series: Guinea Pig Part 5: Android of Notre Dame (1989).
Is Guinea Pig: Mermaid in the Manhole worth watching?
Our verdict is Snoozefest: Your time is worth more. It scores 5.4/10 from 74 TMDB viewer ratings.
How long is Guinea Pig: Mermaid in the Manhole?
Guinea Pig: Mermaid in the Manhole runs 58 minutes (0h 58m).
Does Guinea Pig: Mermaid in the Manhole have a post-credits scene?
None is listed for Guinea Pig: Mermaid in the Manhole. Viewers tag these on TMDB, so a brand-new film may not be tagged yet.
Guinea Pig: Mermaid in the Manhole parents guide: is it suitable for kids?
No age rating is listed for Guinea Pig: Mermaid in the Manhole yet.
Which OTT platform is Guinea Pig: Mermaid in the Manhole on?
Guinea Pig: Mermaid in the Manhole isn’t streaming on any OTT platform in India yet; it released on 25 July 1988. (Checked 14 November 2026.)
What movies are like Guinea Pig: Mermaid in the Manhole?
If you liked Guinea Pig: Mermaid in the Manhole, try Slime City, Biotherapy, Junk.
Who directed Guinea Pig: Mermaid in the Manhole?
Guinea Pig: Mermaid in the Manhole (1988) was directed by Hideshi Hino and stars Shigeru Saiki, Mari Somei, Go Riju.