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.
Visible crew/equipment: There's one bit where we see the shark slamming into a boat and gliding along the side with its mouth open. Not only does the shark's latex mouth bend beneath the snout, narrowing from pressure, but within the mouth you can clearly see yellow hydraulic tanks to open the mouth.
Visible crew/equipment: On the morning after Brody is fired, when his wife gets up from the kitchen table and talks to their house keeper, the shadow of a crew member holding a boom mic can be seen on the wall on the right side of screen, while the shadow of the boom mic is visible above the doorway.
Visible crew/equipment: When Larry, Ellen Brody, and a group of others are touring some people around the beach, showing them around, they look up to see Chief Brody in the watch tower, looking out for sharks. In the close-up of Ellen looking up at him, the boom mike bobbing around, is clearly reflected in her sunglasses.