Character mistake: On the death certificate for Chrissie, the shark's first victim, the date of death is July 1st. But later, on the reward paper posted by the boy's mother, it says that the date of Alex's death was June 29th. Alex died after Chrissie, not before. Also, the form refers to the coroner as the "corner." (00:09:05 - 00:18:10)
Character mistake: During one of the shark scares at the beach, Chief Brody is running along the shoreline telling everyone to get out of the water. There are several frames where the Chief and a man with a moustache are at the water's edge. If you look closely you will notice that the man is smiling and laughing and other people laugh as well. (00:17:30)
Character mistake: In the beginning of the movie, Chrissy goes swimming on the night of July 1. Her remains were found the next morning on July 2. The police report that Brody types up states that the incident happened at 11:50 p.m. On July 1 and that Chrissy's remains were found at 10:20 p.m. On July 2 and not in the a.m. As the movie shows. Also on the police report, it states that Chrissy was removed to the "CORNERS OFFICE" and not the coroner's office. (00:09:30)
Character mistake: When Brody waves at his wife Ellen she says "I've got Shawn." In the next shot he's running after his brother Michael going to the pond, so she has not got him at all.
Character mistake: Captain Quint tells Hooper and Brody that the USS Indianapolis delivered "the Hiroshima bomb" in 1945. This is a myth that has persisted for decades and right up to the present. To prevent it from being lost in one piece, the Hiroshima bomb was actually delivered in pieces by various means to Tinian Island, where the parts were reassembled before it was carried aboard the Enola Gay to its target in Japan. The USS Indianapolis delivered only the detonator for the bomb. (01:29:00)
Character mistake: At the beginning, Sheriff Brody walks onto the "boat" that takes people and, at most, two cars across the water to the mainland. A car joins Brody with 3 men, the medical examiner, the major and the newspaper man. Brody has been told, by the medical examiner, that it was a shark attack that killed the young woman who swam at night (the first death in the film) but now he is being coerced into saying it was a boating accident. Meanwhile, the man who handles the "boat" has already put it in reverse, heading back where they have come from Nonetheless, the mayor says, "You can take us back now." Turning around, he would have seen the folly in his words.kh1616
Character mistake: When Chief Brody finds Chrissie's remains on the beach it is the middle of the day. Yet when Chief Brody is filling out Chrissie's death certificate, he lists Date/Time Death Discovered on 2nd July 1974 at 10:20pm. It would have to be dark for that to have happened. (00:08:00 - 00:09:05)Casual Person