Whalefall traps a diver inside a sperm whale, and viewers say it's really about his dad

Whalefall, Brian Duffield's adaptation of Daniel Kraus's 2023 novel, opened in UK and US cinemas on 16 October 2026. Austin Abrams plays Jay Gardiner, a diver who goes down off the California coast to recover the remains of his father, Mitt (Josh Brolin), gets swallowed by a sperm whale and has about an hour of oxygen to get out. Critics are broadly on board, with the film sitting at 79% on Rotten Tomatoes. The first audiences have a narrower complaint, and the most upvoted comment in the r/movies official discussion thread sums it up:

"Dude uses a jellyfish as a flashlight, and the whale becomes such a metaphor for his dad it starts talking to him. It certainly is a movie."

— top comment on r/movies

That's a viewer's summary, and the ending stays unspoiled here. But the thread agrees on where the film works and where it doesn't.

The whale is the good bit

Even the unhappy viewers back the stomach scenes. The split, as the thread tells it:

• What works: everything inside the whale. The escape attempts, the close-ups, the gore and especially the sound. One viewer called it "auditorily excellent in Dolby", another said the film was "so beautifully shot at times".
• What doesn't: the cutaways to Mitt. One commenter complained that whenever Jay hits a problem, the film flashes back to his dad yelling "the EXACT same solution".
• The last half hour: the father-son material, according to one viewer, takes up "the majority of the last 30 minutes".

So the film has a survival thriller and a family drama, and the audience is only buying one of them. Another viewer put it bluntly: it "should've been a survival thriller instead of a family drama", and while the format could work in a novel, on screen it "really does not work".

Every monster is someone's grief now

Whalefall is just the latest film caught by a rule modern genre cinema treats as law: the monster has to turn out to be trauma. The Babadook (2014) was grief in a top hat. Smile (2022) was trauma with a grin. Duffield's own No One Will Save You (2023) sent aliens after a woman who has spent years carrying the blame for her childhood friend's death.

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The trouble starts when the metaphor gets in the way of the premise, and "man swallowed alive by a whale" is about as clean a premise as Hollywood has been handed in years. Nobody buys that ticket to learn how Jay feels about his father.

People paid to watch a man get digested. They got a man processing.

The thread has already done the edit. Another top comment on the flashbacks: "I nearly fell asleep every time it cut to a flashback." And then the fix:

"Make it 70 minutes of him trying to escape and you'd have one of the best thrillers of the year."

— r/movies commenter

The 70-minute cut

Fair enough as a pitch, given that Whalefall runs 106 minutes. The audience version drops 36 of them, roughly all of Josh Brolin.

That leaves the practical question. If you want the sperm whale, the jellyfish and the Dolby mix, the thread says the film delivers. If you came for the father-son drama, you're apparently in the minority.

Box Office Pro expects a domestic opening of $10 million to $15 million, modest money for a film whose whole sales pitch was a giant mouth. The whale did its job. The dad was meant to be the bonus.

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