Most Similar Movies to Underwater (2020)
If you are looking for movies like Underwater (2020), you might like movies tagged with keyword : sci-fi, horror, thriller, disaster, deep sea, monster, survival, claustrophobic, lovecraftian, action, suspense, exploration, unknown creature, psychological horror, thalassophobia, escape, alien creature, pressure, deep sea exploration, isolation .
Leviathan (1989), Altitude (2010), DeepStar Six (1989), Deep Rising (1998), The Thing Below (2004), Swimmers (2005), Sector 7 (2011) ... Let's take a look at the following list...

Leviathan (1989)
An American deep-sea mining colony stumbles upon a sunken Soviet vessel hiding a horrific secret.
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Altitude (2010)
After a mysterious malfunction sends their small plane climbing out of control, a rookie pilot and her four teenage friends find themselves trapped in a deadly showdown with a supernatural force.
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DeepStar Six (1989)
A team of navy personnel stationed at a temporary base at the bottom of the ocean and tasked with setting up nuclear missiles discovers a huge underwater cavern which houses a giant prehistoric creature.
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Deep Rising (1998)
A group of heavily armed hijackers board a luxury ocean liner in the South Pacific Ocean to loot it, only to do battle with a series of large-sized, tentacled, man-eating sea creatures who had already invaded the ship.
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The Thing Below (2004)
A mysterious creature terrorizes a rescue team (Billy Warlock, Catherine Lough Haggquist) investigating a distress signal from an oil rig.
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Swimmers (2005)
After an accident in a small Maryland fishing town, 11-year-old Emma begins to question the nature of the adults around her.
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Sector 7 (2011)
A crew, drilling offshore for oil south of Jeju island, finds a lethal alien life form instead.
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The Rig (2010)
In the midst of a tropical storm, the crew of an offshore oil rig must survive the rampage of a creature after invading its undersea habitat.
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Harbinger Down (2015)
While studying the effects of global warming on a pod of whales, grad students on a crabbing vessel and its crew uncover frozen Soviet space shuttle and unintentionally release a monstrous organism from it.
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Alien (1979)
After a space merchant vessel perceives an unknown transmission as a distress call, its landing on the source moon finds one of the crew attacked by a mysterious lifeform, and they soon realize that its life cycle has merely begun.
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Cloverfield (2008)
A group of friends venture deep into the streets of New York on a rescue mission during a rampaging monster attack.
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A Quiet Place (2018)
In a post-apocalyptic world, a family is forced to live in silence while hiding from monsters with ultra-sensitive hearing.
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Storage 24 (2012)
In London, a military plane crashes leaving its highly classified contents strewn across the city. Completely unaware that the city is in lockdown, a group of people become trapped inside a storage facility with a highly unwelcome guest.
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This Is Meg (2017)
Based on true events. "This is Meg" is a sneak peak into the Los Angeles lifestyle of a working but not famous female actress/comedienne's point of view that is forced to shift with the social media wave.
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Jurassic Park III (2001)
A decidedly odd couple with ulterior motives convince Dr. Grant to go to Isla Sorna for a holiday, but their unexpected landing startles the island's new inhabitants.
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The Meg (2018)
A group of scientists exploring the Marianas Trench encounter the largest marine predator that has ever existed - the Megalodon.
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Sputnik (2020)
Summoned to a secluded research facility, a controversial young doctor examines a cosmonaut who returned to Earth with an alien parasite inside of him.
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The Descent: Part 2 (2009)
Refusing to believe her story about cave-dwelling monsters, the sole survivor of a spelunking exploration gone horribly wrong is forced to follow the authorities back into the caves where something awaits.
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