Continuity mistake: The dressing that is on the evil Dr Leticia Baines's forehead keeps changing. When she is first placed on Grogan's raft, the dressing is soaked with blood. In the next few scenes it just has a small patch of blood in the centre. After she swims to rescue the boy from his canoe, she gets on the raft and the dressing is dry. In the next two close-up shots the dressing is wet (with water) and then it is dry again.
Suggested correction: While the description of the events and the mistake is accurate, it wasn't Dr. Baines that swims out to save the boy. It was Dr. Hoak. You're thinking of the 1995 remake of the film.
Continuity mistake: In the scene where the kids at the Lost River Lake Resort are being attacked by piranha fish, Brogan's daughter Susie is hiding under a blue boat. She tries to lift the boat so she can use it to rescue her friends. It's too heavy for her, so she uses an inflatable boat instead. As she launches the inflatable off the jetty, you can see the blue boat in the water beside the jetty. Moments later, Brogan arrives and picks up the boat from where it was when she was hiding under it.
Continuity mistake: As Paul races the jeep down the highway behind the RV, he suddenly cuts out and into the oncoming path of a car, where he swerves to avoid a collision. But his jeep suddenly speeds up like a cartoon car, while the other vehicle driver goes opposite. Obviously an editing mistake.
Continuity mistake: The piranha attack the raft, feeding on Doc's dead hand. So Paul cuts him loose into the water, and he floats away, though some of the piranha are still savagely attacking the raft until it reaches shore.
