Character mistake: When Dr. Elkins is measuring the Killer Whale, she says "111 centimeters" followed immediately by "68" (centimeters). But her arm spread shown when she says that is not 111 centimeters - about 3.6 feet (1+ YARD wide). It's more like 2 feet. The "68 centimeters" is actually more accurate for the shot though: 26 inches, which is shown.
Jaws 2 (1978)
1 character mistake
Directed by: Jeannot Szwarc
Starring: Roy Scheider, Murray Hamilton, Lorraine Gary, Joseph Mascolo
Visible crew/equipment: In the scene where Brody approaches the group of teenagers on their smashed boats, the angle cuts to show Brody approaching seen as if from Cable Junction. At this point, there is a huge mistake. The teenagers' boats are clearly visible in the foreground, the kids have all completely vanished, and you can spot the cameraman standing on the boats quite clearly.
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Suggested correction: If it's the angle I'm thinking, I think this is wrong. The first boat to appear in that short is of Lucy and Patrick, but the positioning of the fencing joints plus the boat visible is simply the upturned Marge and Sean's boat that Sean was rescued from before this.
Martin Brody: I think we've got another shark problem.
Mayor Larry Vaughn: Are you serious?
Martin Brody: You bet I'm serious.
Trivia: When Brody gets fired and is drunkenly exiting the truck, entering his house, notice they have a yellow barrel as a planter at the front door - a nod to Quint's barrels.