Plot hole: Why does the shark EXPLODE when it gets stabbed by the boat in the end? It had a transmitter of electromagnetic energy designed to shock it rammed down its throat, nothing that would explode like that.
Jaws 4 (1987)
1 plot hole - chronological order
Directed by: Joseph Sargent
Starring: Michael Caine, Mario Van Peebles, Lorraine Gary, Lance Guest
Factual error: Sharks cannot "stand" up on the surface of the water like this one does in the end. (01:11:15)
Michael Brody: Dad died of a heart attack!
Ellen Brody: No. He died from fear. Fear of that shark.
Trivia: In the third film Michael Brody did a whole lot of welding and dated a marine biologist. In this film he is studying to be a marine biologist and his wife does a lot of welding.
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Answer: We never see Jake "eaten", he is merely shown being dragged underwater by the shark. Off screen, the shark simply let go of Jake and didn't kill him. In a movie full of factual errors and plot holes, this bit is actually somewhat realistic. Sharks typically do not eat humans, but will maul people on occasion and let go, presumably because they don't like the taste. How Jake survives underwater for minutes on end is not addressed. Originally, Jake was meant to be killed by the shark but for whatever reason, it was decided that Jake should survive and make a surprise appearance after the shark has been killed.
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