Cody and C.J. come to Sea World wearing only swimsuits. When they leave the veterinarian's office and walk around the park, they wear clothes they definitely did not bring with them.
When C.J. says, "I'll miss him but I'm glad he's going home," Cody's right hand is not visible. It then cuts to a close-up of the two of them and some of his fingers are visible on her neck.
Both Mitch and C.J. wear water shoes when they rescue the couple on the rocks. When they come back to shore, Mitch is barefoot. His shoes have reappeared by the time he enters the cave.
When Mitch and C.J. swim up to rescue the people on the rock, there is less than a foot of rock sticking out of the water. It then cuts to a longer shot and much more of the rock is exposed.
After the rescue at Sea World, C.J. is soaking wet despite not having actually participated in the rescue, let alone gotten wet.
When the drunk blonde points at the show and says, "Did you see that guy?" her mouth movement doesn't match.
When the man on the boat asks, "Are you out of your mind?" his mouth doesn't move.