Trivia: In the waiting room of the dentist's office you can see a Buzz Lightyear action figure lying on the floor. (00:25:35)
Trivia: While the credits are rolling you see most of the characters swim onscreen. Stay long enough and you'll see Mike from Monsters Inc. swim across with a scuba mask and fins. (01:39:10)
Continuity mistake: When the dentist wants to put Nemo in a bag, it's a resealable one with a seam at the top. When he finally catches him, it has changed to a normal plastic bag.
Continuity mistake: Before Nemo is initiated into the Tank Gang, Brother Bloat introduces the Ring of Fire. Bloat then retreats and goes between the on-looking fish. In the next shot Bloat is on the outside/right. In the following shot Bloat is again in the middle. (00:38:15)
Continuity mistake: The "'For a bite that counts', alligator floss'" poster on the wall moves further from the window as Phillip Sherman grabs Nigel, then it suddenly moves back to its original position. The poster is first visible close to the window in an earlier shot. (01:19:50)
Deliberate mistake: When Dory is inside the whale, she doesn't have the scars from the jellyfish sting anymore. [This is actually a long-standing Disney tradition. The company seems to believe that it is less traumatic to see violence onscreen if the evidence is gone immediately (blood, scars, etc. always disappear). Still an error, but it wasn't the fault of the CGI animators.] (01:09:30)
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.
Even if he isn't exactly between the wires in the next shot, he still moves between shots, so the mistake is valid.
Factual error: At the end of the movie it shows all of the aquarium fish in the ocean inside of their bags. It also shows the bags almost completely out of the water with only a small portion under water while the bags are almost completely filled with water. With this amount of water the bags should be submerged underwater with only the little amount of air showing on the surface, because water is not lighter than water; water weighs the same. (01:32:40)
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.
The camera doesn't move down, it zooms out. There are eggs at the mouth of the cave in the second shot, and in the first shot, the same area of the cave is shown, but there are no eggs visible. The different shot sizes don't matter here.
Continuity mistake: Near the end, when Marlin gets the fishing net off Nemo and talks to him a little about sea turtles, the rocks and seaweed nearby change between shots.
Continuity mistake: When Marlin and Dory are looking at the boats trying to find the one that took Nemo, they swim past a boat that says "Jerome's Raft." on it. When Nigel swoops down and gets them, the boat is completely missing, and the boat that was next to it is now the one closest to the dock.
Continuity mistake: When Nigel flies into the dentist's office, he knocks one of the picture frames falls on the floor. Later on, while the dentist is trying to catch Nigel, the picture frame disappears.
Continuity mistake: When Nigel flies into the dentist's office, he nudges one of the picture frames, and it moves a little. Two shots later, it's back to its original position.
Continuity mistake: When Marlin and Dory get to the trench, there are some rocks around them. In the next shot, they disappear.
Continuity mistake: When Nigel flies into the window, there is a picture of a man on the counter. In the next shot of it, the picture changes position.
Continuity mistake: When the dentist grabs Nigel, the window blinds are slightly down. Then when he throws him out the window, the blinds are suddenly up all the way.
