Exploring the deep has always fascinated filmmakers, giving rise to stories that blend adventure, danger, mystery, and the occasionally absurd. While underwater documentaries capture the real-life wonder of the ocean, scripted films let us dive into something wilder: alien worlds, sunken horrors, daring rescues, and even ill-advised scientific experiments involving very smart sharks.
This list gathers five of the greatest underwater films, chosen not for strict scuba-related accuracy but for how memorably they plunge their characters—and us—beneath the surface. From war dramas to whimsical comedies and sci-fi epics, each film takes the ocean and turns it into a stage for unforgettable storytelling.
5. Deep Blue Sea (1999)
What would happen if genetically enhanced, super-intelligent sharks got loose inside a secret research facility? Well, nothing good… Deep Blue Sea ranks as a guilty pleasure rather than a cinematic masterpiece. There’s something enjoyably B-movie about it, with plenty of excitement, funny deaths, and general silliness. The film stars rapper LL Cool J, who also produced shark-themed music for the soundtrack.
Are there more meaningful films about the ocean? Sure, but it’s Jurassic Park with sharks, so it makes the list.
4. Thirteen Lives (2022)
The dramatic rescue of the Thai football team from the Tham Luang cave was always going to be the perfect subject for a film adaptation. The reason Thirteen Lives works is that it sticks closely to the real-life events and characters. There’s no need to artificially ratchet up the tension for the big screen—the true story is more than enough.
It’s also worth checking out the documentary covering the event: The Rescue (which made it onto my list of the best underwater documentaries).
3. The Life Aquatic with Steve Zissou
I’d never seen a Jacques Cousteau documentary before watching Steve Zissou. Aware of them, yes, but I had no idea quite how perfectly the film captures the look and feel (red hats and all) that made Cousteau’s documentaries so distinctive.
The titular Steve Zissou, played by Bill Murray, is a fading oceanographer and filmmaker searching for the elusive “Jaguar” shark that killed his best friend. The Life Aquatic serves as both a whimsical pastiche and a loving homage to the original underwater explorer. The film flopped at the box office but has steadily built a cult following.
2. Das Boot (1981)
Das Boot traces the harrowing patrol of a German U-boat crew during World War II as they navigate the claustrophobic, perilous world beneath the Atlantic. The film situates you right alongside the crew and is almost painfully tense as they work to survive repeated Allied attacks.
It’s one of the greatest WW2 films ever made, effectively combining realism, action, and the everyday humanity that existed (even within the ranks of Nazi Germany). There are a number of different versions available, but I’d recommend watching the longest one, which comes in at a whopping 5 hours.
1. The Abyss (1989)
For me, the clear number 1.
Written and directed by James Cameron (Titanic, Avatar, Aliens), The Abyss follows a civilian diving team enlisted by the US Navy to help salvage a nuclear submarine sunk in mysterious circumstances. During the mission, they encounter an alien life form, or non-terrestrial intelligence, and must overcome the danger from it and from each other.
The Abyss is the most James-Cameron film James Cameron ever made, combining his dual passions for technology and the ocean. The diving in the film isn’t entirely accurate, but it’s grounded enough in real ideas and plausible scientific justification that you don’t question it. One of the most memorable plot points—based on real science—is the futuristic liquid rebreathers used by the Navy SEALs.
Perhaps just as interesting as the film itself is the story of how it was made. With no film studio able to provide a pool large enough to film in, Cameron found a half-finished nuclear power plant and converted the reactor’s containment vessel into a huge underwater set. The film was made before the widespread use of CGI, so nearly the whole production took place underwater, with the actors learning to dive and spending a gruelling amount of time submerged during the shoot.
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