Continuity mistake: The amount of wine in Annie's glass (as well as Nic's) decreases then increases without her adding any. Annie had almost one-half a glass of wine when she poured some into Nic's glass, then it was closer to one-fourth full. A little later, Annie's glass appeared to have the amount she initially had when she approached Nic. (00:13:59)
Revealing mistake: After the shark got Lisa, Annie climbed atop her overturned kayak and was lying with her stomach about mid-way on the kayak with her feet over the back sides. The kayak was not long enough for Annie to have her body on half of it; her legs did not look real (odd-shaped and disproportionately short/CGI). When Nic got to the kayak, Annie's toes were on top of the (overturned) kayak instead of her feet hanging over the sides. (00:36:21)
Continuity mistake: The position of the towels used on Demi's shark-bitten upper left leg changed and/or did not match what the characters said was being done (but was not shown at the time). For example, a green (or blue) and white towel folded lengthwise was to be wrapped around her thigh (above her knee) to exert pressure. The towel started to be put underneath her thigh but the camera shifted; the towel was later shown to be draped along her left side (not tied). (00:45:51 - 00:46:22)
Revealing mistake: The boat's motor/engine was in the center-rear when Annie and Jodie brought it to the beach, but when Nic and the others were looking at the boat, the motor was off to the side (near the corner). The position of the motor varied, sometimes being in the corner when one of the riders would have obstructed its view. The appearance of the motor and which direction it was facing, the size of the tiller handle, and whether the water inlet port/propeller could be seen also varied. (00:48:57 - 00:49:47)
