Released on October 16, the survival thriller Whalefall follows a scuba diver accidentally swallowed by a sperm whale.
Based on Daniel Kraus’s 2023 novel, the story follows university student Jay Gardiner—played by Austin Abrams—as he dives offshore in California to recover the remains of his father. During the dive, he gets entangled with a giant squid just as a sperm whale sweeps in to feed, resulting in an accidental ingestion that traps him deep inside the animal’s multi-chambered stomach.
The new film Whalefall brings a classic survival narrative to the screen by dropping its protagonist straight into the digestive tract of a massive marine mammal.
Director and cowriter Brian Duffield noted that in the movie you can tell the whale is pretty oblivious to the fact that Austin Abrams is around.
He’s in the way of lunch.
Kraus worked closely with scientific advisors during both the writing of the book and the production of the film to ensure the story respected marine biology wherever possible.
Biological Hurdles Make Human Predation Unlikely
Ilias Foskolos, who researches deep-diving toothed whales at Aarhus University and Stanford University, explains that sperm whales are oceanic predators that typically inhabit deep offshore waters rather than coastal shallows where humans dive. Their diet primarily consists of squid measuring roughly 30 to 40 centimeters long. The core premise rests on whether a sperm whale could actually swallow an adult human wearing scuba gear. Marine scientists consulted for the production point out biological hurdles.
Dr. Anaïs Remili, a marine ecotoxicologist at Simon Fraser University, notes that we think sperm whales feed using suction,
adding that a big gelatinous squid is very easy to suck. If you’re a human being, it becomes complicated.
While a massive sperm whale possesses a throat passageway large enough to physically accommodate a person, fitting a diver complete with a rigid oxygen tank and skeleton introduces complications.
If it’s a massive sperm whale, technically we might fit. But I think with dive equipment it becomes really complicated. A giant squid is much more pliable than a human skeleton. Squid are very bendy and gelatinous; we’re not made of the same material.
Comparing Cinematic Fiction To Animal Anatomy
Reidenberg explains that a whale’s first stomach chamber acts as a mechanical mushing unit meant to break down soft prey without bones. Once inside the fictional animal, the protagonist must face anatomical chambers designed to crush and digest prey. Because human bones and incompressible scuba tanks offer heavy resistance, a real whale’s stomach muscles would face an entirely unfamiliar form of pressure. Similarly, while corrosive digestive acids in subsequent chambers would burn exposed skin, a proper dry suit would offer protection against immediate chemical damage.
Researchers point out that these sunken carcasses provide nutrients to deep-sea ecosystems, fueling communities of scavengers that rely on the fallen organic matter for survival. Scientists frequently study whale falls—the term used when a dead whale settles onto the deep ocean floor.
Historical Tales Contrast with Whale Anatomy
Literary and historical examples range from ancient accounts to the 19th-century tale of James Bartley, who allegedly survived inside a whale before being rescued by hunters. Human fascination with being swallowed by marine giants stretches back centuries. More recently, media coverage focused on instances like a Venezuelan kayaker named Adrián Simancas, who was scooped up and promptly spat out by a humpback whale.
A review of the film from Answers in Genesis notes that a sperm whale’s esophagus measures roughly 16 inches or 40 centimeters wide, making any prolonged survival inside an actual whale an impossible physical feat. While humpbacks and other baleen whales feed using filter methods to swallow massive quantities of small fish and krill—swallowing a fatty paste akin to a gross, fatty milkshake
—their throats remain far too narrow to ingest a person.
