Before the captain jumps into the ocean to try and save the boat, he takes off his shoes. After he burns the boat, he jumps into the water and you can clearly see his shoes.
After the survivors emerge from the swamp, there are alternating scenes in which Marilyn Fryser's (Joan Collins) white skirt is dirty, then completely clean, and then dirty again.
Near the end of the film during the ant attack in the sugar refinery, Joan Collins' character is seen outside with the others fleeing, and then she is suddenly back in the refinery being attacked by one of the large ants.
Following the storm in which all the characters were seen getting soaked outside in the rain, they continue their escape from the large ants completely dry.
When all of the characters are attempting to escape in the red Chevrolet and are being shot at by police, the car mounts an unseen ramp and dives into the nearby water. As it enters, in slow motion, only the driver is shown in the car. Moments later, three people are shown exiting the car and two more are climbing up the riverbank.