Movies like UNDER [SI:]
The best movies like UNDER [SI:] are Ghosts of the Abyss (2003), Titan: The OceanGate Submersible Disaster (2025) and Atlantis: The Lost Empire (2001). If UNDER [SI:] hooked you, these 20 similar films are what to watch next, and every pick says why it matches.
![UNDER [SI:] poster](https://image.tmdb.org/t/p/w342/kvNkhHcOkMnzRgUNJz1WYe7u2NW.jpg)
Quick picks
- Highest ratedCrumb (1995)7.6/10 from 300 votes
- NewestS4: The Bob Lazar Story (2026)Released 2026
Ghosts of the Abyss (2003)
With a team of the world's foremost historic and marine experts as well as friend Bill Paxton, James Cameron embarks on an unscripted adventure back to the wreck of the Titanic where nearly 1,500 souls lost their lives almost a century ago.
Why it matches: Recommended by TMDB viewers
Popcorn FlickMovies like thisTitan: The OceanGate Submersible Disaster (2025)
OceanGate's Titan tourist submersible imploded in 2023 on a deep-sea dive to the Titanic. This documentary details how a bold vision ended in tragedy.
Why it matches: Recommended by TMDB viewers
Worth the HypeMovies like thisAtlantis: The Lost Empire (2001)
A young linguist named Milo Thatch joins an intrepid group of explorers to find the mysterious lost continent of Atlantis.
Why it matches: Recommended by TMDB viewers
Worth the HypeMovies like this20,000 Leagues Under the Sea (1954)
A ship sent to investigate a wave of mysterious sinkings encounters the advanced submarine, the Nautilus, commanded by Captain Nemo.
Why it matches: Recommended by TMDB viewers
Worth the HypeMovies like thisUnder the Sea 3D (2009)
Imagine a world of incredible color and beauty. Of crabs wearing jellyfish for hats. Of fish disguised as frogs, stones and shag carpets. Of a kaleidoscope of life dancing and weaving, floating and darting in an underwater wonderland. Now, go explore it! Howard Hall and his filmmaking team, who brought you Deep Sea and Into the Deep, take you into tropical waters alive with adventure: the Great Barrier Reef and other South Pacific realms. Narrated by Jim Carrey and featuring astonishing camerawork, this amazing film brings you face to fin with Nature's marvels, from the terrible grandeur (and terrible teeth) of a Great White to the comic antics of a lovestruck cuttlefish. Excitement and fun run deep Under the Sea!
Why it matches: Recommended by TMDB viewers
Worth the HypeMovies like thisThe Deep House (2021)
While diving in a remote French lake, a couple of YouTubers who specialise in underwater exploration videos discover a house submerged in the deep waters. What was initially a unique finding soon turns into a nightmare when they discover that the house was the scene of atrocious crimes. Trapped, with their oxygen reserves falling dangerously, they realise the worst is yet to come: they are not alone in the house.
Why it matches: Recommended by TMDB viewers
Popcorn FlickMovies like thisErin Brockovich (2000)
A twice-divorced mother of three who sees an injustice, takes on the bad guy and wins -- with a little help from her push-up bra. Erin goes to work for an attorney and comes across medical records describing illnesses clustered in one nearby town. She starts investigating and soon exposes a monumental cover-up.
Why it matches: Recommended by TMDB viewers
Worth the HypeMovies like thisS4: The Bob Lazar Story (2026)
Over 35 years after Bob Lazar's revelations, this documentary exposes secrets of a facility the government still denies. Featuring Lazar's testimony, recreations, and new evidence, it reopens a case that continues to spark global curiosity
Why it matches: Recommended by TMDB viewers
Absolute CinemaMovies like thisLast Breath (2025)
Seasoned deep-sea divers battle the raging elements to rescue their crewmate trapped hundreds of feet below the ocean's surface.
Why it matches: Recommended by TMDB viewers
Popcorn FlickMovies like thisOn the Beach (1959)
In 1964, atomic war wipes out humanity in the northern hemisphere; one American submarine finds temporary safe haven in Australia, where life-as-usual covers growing despair. In denial about the loss of his wife and children in the holocaust, American Captain Towers meets careworn but gorgeous Moira Davidson, who begins to fall for him. The sub returns after reconnaissance a month (or less) before the end; will Towers and Moira find comfort with each other?
Why it matches: Recommended by TMDB viewers
Popcorn FlickMovies like thisSanctum (2011)
Master diver Frank McGuire has explored the South Pacific's Esa-ala Caves for months. But when his exit is cut off in a flash flood, Frank's team—including 17-year-old son Josh and financier Carl Hurley are forced to radically alter plans. With dwindling supplies, the crew must navigate an underwater labyrinth to make it out.
Why it matches: Recommended by TMDB viewers
Popcorn FlickMovies like thisInto the Deep: The Submarine Murder Case (2020)
When journalist Kim Wall disappears after boarding inventor Peter Madsen's submarine, his changing story about her fate masks a terrifying truth.
Why it matches: Recommended by TMDB viewers
Popcorn FlickMovies like thisDeep Sea 3D (2006)
Sea life in a whole new way. Deep Sea 3D, an underwater adventure from the filmmakers behind the successful IMAX® 3D film Into the Deep, transports audiences deep below the ocean surface. Through the magic of IMAX®; and IMAX 3D, moviegoers will swim with some of the planets most unique, dangerous and colorful creatures, and understand this inspiring underworld.
Why it matches: Recommended by TMDB viewers
Popcorn FlickMovies like thisCrumb (1995)
This movie chronicles the life and times of R. Crumb. Robert Crumb is the cartoonist/artist who drew Keep On Truckin', Fritz the Cat, and played a major pioneering role in the genesis of underground comix. Through interviews with his mother, two brothers, wife, ex-wife and ex-girlfriends, as well as selections from his vast quantity of graphic art, we are treated to a darkly comic ride through one man's subconscious mind.
Why it matches: Recommended by TMDB viewers
Worth the HypeMovies like thisAs Above, So Below (2014)
When a team of explorers venture into the catacombs that lie beneath the streets of Paris, they uncover the dark secret that lies within this city of the dead.
Why it matches: Recommended by TMDB viewers
Popcorn FlickMovies like thisIron Lung (2026)
In a post-apocalyptic future where an event known as "The Quiet Rapture" caused all known stars and habitable planets in the universe to disappear, a convict is sent to search an ocean of blood discovered on a desolate moon, using a small submarine nicknamed the "Iron Lung".
Why it matches: Recommended by TMDB viewers
Popcorn FlickMovies like thisJaws @ 50: The Definitive Inside Story (2025)
The authorized documentary celebrating the film that redefined Hollywood, 50 years after its premiere. Featuring rare archival footage and interviews with acclaimed Hollywood directors alongside Steven Spielberg, top shark scientists, and conservationists, the film uncovers the behind-the-scenes chaos and how the film launched the summer blockbuster, inspired a new wave of filmmakers, and paved the way for shark conservation that continues today.
Why it matches: Recommended by TMDB viewers
Worth the HypeMovies like thisThe Deepest Breath (2023)
Bonded by their love of freediving, a record-setting champion and a heroic safety diver try to make history with a remarkable feat, ready to risk it all.
Why it matches: Recommended by TMDB viewers
Worth the HypeMovies like thisOcean with David Attenborough (2025)
David Attenborough takes viewers on a breathtaking journey showing there is nowhere more vital for our survival, more full of life, wonder, or surprise, than the ocean. Through spectacular sequences featuring coral reefs, kelp forests and the open ocean, Attenborough shares why a healthy ocean keeps the entire planet stable and flourishing.
Why it matches: Recommended by TMDB viewers
Absolute CinemaMovies like thisDeepsea Challenge 3D (2014)
Described as being a film about determination, danger and the ocean’s greatest depths, James Cameron's "Deepsea Challenge 3D" tells the story of Cameron’s journey to fulfill his boyhood dream of becoming an explorer. The movie offers a unique insight into Cameron's world as he makes that dream reality – and makes history – by becoming the first person to travel solo to the deepest point on the planet.
Why it matches: Recommended by TMDB viewers
Popcorn FlickMovies like this
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Frequently asked questions
What are the best movies like UNDER [SI:]?
The closest matches to UNDER [SI:] are Ghosts of the Abyss (2003), Titan: The OceanGate Submersible Disaster (2025) and Atlantis: The Lost Empire (2001). Below are 17 more, each with the reason it matches.
What should I watch after UNDER [SI:]?
Start with Ghosts of the Abyss (2003), the closest match to UNDER [SI:].
What is the highest-rated movie like UNDER [SI:]?
Crumb (1995), rated 7.6/10 by 300 TMDB users.
What is the newest movie like UNDER [SI:]?
S4: The Bob Lazar Story (2026) is the most recent release on this list.
Are there English movies like UNDER [SI:]?
Yes: Ghosts of the Abyss (2003), Titan: The OceanGate Submersible Disaster (2025) and Atlantis: The Lost Empire (2001).
How are movies similar to UNDER [SI:] chosen?
First come films that Trakt’s viewers watch alongside UNDER [SI:], then TMDB’s recommendations and films it rates as similar in story and genre. Each pick says which signal put it there.