It’s a rare but understood truth that the peak entry in the shark attack subgenre came at the very beginning with Steven Spielberg’s 1975 summer blockbuster, Jaws. That’s not the way it usually works, but while Spielberg’s film was immediately chased by copycats and knockoffs – some of which are a lot of fun – it’s continued to hold the title of best killer shark movie for over half a century.

Until now.

Ha, sorry, that was cruel, but sometimes you have to make your own entertainment when the movie you’re watching and writing about offers none of its own. Chum is the kind of bottom-of-the-barrel shark flick that we’ve seen a lot of in recent years, with interchangeable titles like Great White, Shark Bait, and Maneater. A sunny setting (usually the best thing about the movie), obnoxious characters, poor writing, and horrible effects – that’s the recipe for far too many shark attack movies over the past decade, and Chum ticks off each of those boxes in quick order.

It stands apart from those other bad films, though, with the addition of two simple letters. One is an A, and the other is an I, and together they spell shitty, job-killing digital effects. More on that in a minute, but for now, let’s dive into the guts of Chum.

We open on a fishing trawler moving through the water off Malta while a man provides voiceover. Roy (Jim Klock) talks solemnly about the endless ocean, his lovely wife, and the painful collision between the two that came when a Great White shark bit her in half. “I am not the sea,” he says, “I’m a man, and a man does not forget.”

A quick smash to the title card is followed by the introduction of Tina (Alice Eve) and Tom (Eric Michael Cole) at their wedding reception in Malta. There’s already trouble in paradise, but a last minute wedding gift sees them heading out to sea for a three-hour tour the next afternoon with three friends and Tina’s sister, Sadie (Elle Haymond). A couple of very contrived beats later, and the yacht is sinking and in flames, forcing them to be rescued by a conveniently nearby Roy.

He’s not their savior, though, and instead drugs and binds the gang with the intention of using them for a very particular purpose. It’s vengeance he’s after, and he intends to use them as bait in an effort to attract and then kill the shark that ate half of his wife five years ago. Roy apparently got a tracker on the beast at some point, and over the years, he’s tried luring it in with fish entrails, seals, cats, and dogs – but it only responds to live human chum. Uh oh!

A shark attack movie doesn’t need to be entirely original in its concept or execution for it to work, so I’m not put off that the filmmakers obviously watched Sean Byrne’s Dangerous Animals before concocting the story for Chum. The human antagonist is the only thing they lifted, though, as they apparently decided they just didn’t need any of that film’s fun, suspense, or onscreen/offscreen talent. Director/co-writer Jonathan Zuck and co-writer Joe Leone – this is Leone’s thirteenth produced script since 2017, a feat that grows less impressive if you actually watch those other movies – try to pair character drama with the twin terrors of a madman and a hungry shark, but everything here just falls flat.

What could have been an engaging piece of sunlit terror instead stumbles and falls beneath clunky dialogue and even worse delivery. The cast, Eve surprisingly included, are as unconvincing at saying “good morning” as they are at exclaiming “Jesus! Are you okay?” after pulling a spear from their friend and watching the blood gush out. Did I laugh when someone tells Roy, “You know, for a shark hunter, you’re not very good at this,” or when someone else refers to the aquatic threat as “some aggro incel shark”? Yes, but that says more about my desperate need for entertainment than it does the quality of the movie.

There’s a genuine litany of dumb things worth criticizing, questioning, and calling out with Chum  – one friend confronts Roy because they haven’t seen the shore for hours, but not only has the shore been visible throughout the film, it’s literally in the background of the scene when he says it. Slow motion and repeated, unnecessary flashbacks are frequently used to bolster the eighty-three-minute (pre-credits) running time. The red color tinting whenever there’s blood in the water is horrendous. We’re in Malta, but everyone, including the police, is American? A certain character is given an insulting, post-death voiceover. Climate change is lazily tacked on as a motivation for the shark’s behavior.

There’s also an argument to be made that the film’s serious tone is part of the problem. The issue isn’t that neither the writing nor the performances can deliver on that seriousness, which they can’t, but instead, deadly serious shark attack movies just rarely seem to work. There are examples of great ones like Open Water and The Reef, but in recent years, the overwhelming majority of the shark movies that deliver the goods all seem to have a sense of humor and a genuine personality. They’re not comedies, but from The Shallows and Deep Blue Sea 3 (shut up, it’s a really good time) to Under Paris and Thrash, the shark films that are having fun are the shark films that are fun.

But yes, better scripts, direction, performances, and visual effects would also help.

Which brings us, finally, to the ugly ass elephant in the room – Chum’s use of A.I. to create what looks like all of its shark carnage. The modern ideal will almost always be some combination of practical effects and traditionally created digital effects to breathe life into your film’s sharks, and even then, the end results can still be a mixed bag. Most recent films tend to rely almost exclusively on the digital, with plenty of the sharks looking laughable as a result, but there’s still at least the solace of knowing that hey, real digital FX animators were paid real money to create those ugly visuals, so kudos to them on their journey towards becoming better.

Chum doesn’t list a single digital effects artist in their end credits. Not one. There are a few supervisors and producers, but not a single VFX artist, compositor, or animator.

The charitable explanation is that the filmmakers just decided not to credit the individual artists for some reason. There’s no listing for the end credits song (called “Crimson Tide,” maybe?) either, so it’s entirely possible. The more likely explanation, though, is found in the film’s only credited digital intermediate house, Tunnel Post, which states on their site that their “Artificial Intelligence division augments all of Tunnel’s business disciplines.” A.I. has its place, obviously, and Tunnel’s use of it in other areas might be understandable, but replacing human artists with a garbage machine is just poor form.

Some of you might not care about that aspect, and I can hear you insensitive jerks now yelling, “Get off your soapbox, Hunter, and just tell us how the effects look!” Fair enough. The shark attack sequences in Chum look pretty darn good if you watch from fifty feet away while squinting through a fog bank and some partially closed Venetian blinds.

The A.I. sequences blend real shark and human footage with digital sharks and people to make it look like characters are not just beside the shark in the water, but actually being chomped and eaten. The quickest of glances might seem convincing, partly because we’re just not used to seeing “real” sharks biting down on “real” people, but watch for more than a half second or so, and it’s clearly a cartoon.

The shark looks too smooth, the people sometimes fluctuate weirdly – one character jumps onto the back of the shark and seems to temporarily grow three pant sizes while in the air – and it just never feels like a tangible situation or threat. Try chumming some of this shit, indeed.

Look, if you’re anything like me – well, first off, congratulations – but more relevant to the point at hand, you’re going to watch this movie regardless of what I say. I get it. Animal attack films are an addiction that I am unable and unwilling to quit. (I’m the same way with Bigfoot movies, and hoo boy, let me tell you, the decline rate on those is even steeper.) There are fun, effective shark films with shoddy effects, movies that entertain despite their visuals, but Chum is not one of them.

No thrills, no suspense, no entertainment value, no real effort, no digital effects artists, and no reason to watch. But you will, so I hope you enjoy it more than I do.

Chum releases in theaters on June 5, 2026.