Corrected entry: When Marlin and Dory are inside the whale, we see his uvula several times, most noticeably when the two are hanging on to his tongue. Whales do not have uvulas. However, one was added by the filmmakers to show that Marlin and Dory were inside his mouth. (01:12:35)
Corrected entry: When the whale arrives in the background its tail fin is vertical. Only fish tails are vertical, whales have horizontal tails.
Correction: I've watched this scene multiple times and the whale's tail is horizontal throughout the whole scene.
Continuity mistake: As the fishing net is being pulled up, a fisherman is shown to the left of two wires on the boat leaning on his elbow. Then in the very next shot, the fisherman is in between the two wires, and now he is leaning on his hand.
Suggested correction: He isn't between the wires.
Factual error: After Nigel returns Marlin and Dory to the ocean it is raining and the sky is nearly solid with gray clouds. As Marlin and Dory speak bright sunlight is streaming down through the water all around them, illuminating the ocean floor. Even if the water is extremely shallow where they are swimming the overcast sky would not provide such bright, consistent light. (01:21:45 - 01:22:40)
Plot hole: When Nemo swims off to the boat, a diver pops up and catches him, and all the fish react. But this diver should have been visible to Marlin and co. long before it reaches Nemo, as they are far enough from the boat and looking out into open sea, yet none of them reacts until the diver is right behind him. Also, bubbles should have risen into shot before the diver does. (00:14:25)
Suggested correction: The fish were focused on the boat, not on divers that were toward the bottom of the ledge that they were at.
Continuity mistake: When Marlin and Coral check on the eggs in the nest, when they first look, no eggs can be seen at the mouth of the cave but a couple of shots later the eggs appear.
Suggested correction: The reason the eggs appear is that the camera may have moved downwards, thus closer to the eggs that would have been at the bottom of the hollow. If it was more upwards, as in the first shot, the eggs would have been below the camera's view.
Correction: Adding human like qualities to animals and items in animated films like this wouldn't qualify as a mistake. By that same logic, the fish speaking, having human like eyes, a shark being able to grin, fish using their fins like arms and holding each other, etc, would all be mistakes.
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Unlike the eyes and the ability to speak, the uvula serves no story or animated purpose, especially since the whale is illustrated much more accurately than the other characters.
It still boils down to adding human features to an animated cartoon character. It's just common practice.
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