Whalefall Ending Explained: Does Jay Survive?

Contains spoilers for "Whalefall"

"Jaws" and countless other shark movies have made people afraid to go in the water even though sharks are usually pretty harmless. Even though whales aren't chomping at the bit to consume human flesh, there's something equally terrifying about these leviathans. Of course, we can take solace in the fact that most whales don't have throats wide enough to swallow a human being whole. However, there are a few exceptions, most notably sperm whales, the animal at the center of the new film "Whalefall," based on the 2023 book of the same name by Daniel Kraus.

While out scuba diving, Jay (Austin Abrams) gets caught in a scuffle between a sperm whale and a squid, with the squid taking Jay into the whale's mouth. What ensues is a struggle for survival where Jay has to use his wits to find a way out of the whale's belly. Between this and playing Bryan in "Resident Evil," Abrams is carving a niche for himself playing guys who are having extremely bad days. But whereas the ending of "Resident Evil" sees Bryan transform into a hideous abomination, does "Whalefall" at least have a happy ending?

Whether you've already seen "Whalefall" and just need some things cleared up or want to know just how gross things get before walking in, this breakdown covers everything. The ending of "Whalefall" will have you feeling all sorts of things, but more than anything, you'll likely just want to shower afterward. 

Mitt (Josh Brolin) dies by jumping off a boat with weights in his suit, forcing himself to drown after suffering from mesothelioma for years. Jay and his sisters have returned to their coastal hometown following their father's passing to be their for their mother, Zara (Elisabeth Shue). We learn that Jay, in particular, had a contentious relationship with his dad. Mitt wanted Jay to take after him more, creating an abusive relationship that Jay's sisters were seemingly spared from. Jay is determined to retrieve Mitt's body so he can attain closure and a sense of redemption.

Jay gets a scuba suit, but due to police activity on the main part of the beach, he dives in a more secluded area. While initially transfixed by the beauty of the ocean floor, he soon witnesses a sperm whale trying to eat a squid. The squid flails its tentacles with Jay getting caught up in the struggle. The whale eats both the squid and Jay whole. 

Jay winds up in the whale's stomach with the squid still alive at first; however, the pressure from the whale's stomach soon crushes the squid and passes it along through the digestive system. Jay also tries to move through the system, only to be surrounded by stomach acid that burns his hands. Jay retreats to another compartment where there's no acid, but he is gradually losing oxygen, as his scuba gear only gives him one hour of oxygen. There's no time to waste to escape.

Jay attempts to crawl out of the whale's esophagus using a jellyfish for illumination. He almost makes it out when the whale breaches, with a whale-watching boat nearby. However, before anyone can hear him, the whale descends rapidly deep into the sea. The vast change in pressure causes Jay to temporarily pass out. The accumulation of methane and nitrogen inside the whale builds up, and Jay starts hearing his father's voice. 

At that same time, a pack of orcas attacks the sperm whale, causing it to cry out. A pod of other whales show up to protect the main sperm whale and fend off the orcas. Unfortunately, the whale has sustained fatal injuries and ascends back near the ocean surface. Jay realizes through his flashback that throughout his life, his father has taught him all he needs to get out of the whale. Using steel wool, a battery, and his oxygen tank, he creates an explosion within the belly of the now-deceased animal. 

Jay struggles to swim to the surface, but fortunately, scientists are on a boat nearby and pull him out of the water. Jay is eventually reunited with his family sometime later as they enjoy one another's company on a boat. 

Jay goes through a physical journey in "Whalefall" trying to escape from the insides of an animal, but his psychological journey is what gives the film its heart. Jay is torn up over the death of his father, having not been there in the final years of his life. Jay left for college in another state, leaving his father behind. Despite feeling bitter toward his dad, something compels him to find his body in the ocean to close that chapter for good.

However, the path forward isn't to simply find a body, bury it, and move on. His dad may have largely been a jerk, but Jay should still incorporate the good things he taught. This culminates when Jay expresses regret over not finding his dad's remains, only for the disembodied voice of his dad to say, "You are my remains."

People don't live on by their physical bodies. They live on by the memories they impart on the people they love. Jay spent so long trying to escape his father, both emotionally and physically, that he never realized he can still hold a piece of him inside. 

The memory of Mitt then tells Jay that when a whale dies, it falls to the bottom of the sea and creates an entire ecosystem within its remains known as whalefall. The same principle applies to Mitt; he's now dead, but has left behind an entire ecosystem of love and family with Jay and his sisters. 

There are various changes the "Whalefall" movie makes to the source material. One significant change is Jay's age. In the book, he's 17. Following an intense confrontation with his father at 15, Jay ran away from home, staying with friends while his father's health deteriorated, and he eventually died. Jay is aged up in the film, and instead of running away at 15, Jay gets into an argument with his father over attending college in another state, so he's been gone from home for a while.

Jay's final escape also differs. The book sees him escape from the whale after it's beached on-shore. A group of scientists are on land who help him out. When Jay escapes the whale in the movie, it is still in the ocean, giving Jay one final ordeal to get through before he's in the clear. Fortunately, the scientists who pull Jay up are here, but on a boat.

In a way, this feels more thematically fitting. Mitt loved the ocean; it was his domain. And Jay escaping from its belly can be viewed as a form of rebirth. He's being born again but this time as truly his father's son. And Jay's later willingness to go on a boat with his family shows that he's come to terms with Mitt's treatment. With such profound themes, it wouldn't be surprising to see people consider "Whalefall" one of the best movies about the ocean.