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Revealing mistakes
When SpongeBob puts down his binoculars, his teeth are yellow for one frame.
Squidward cleans up the graffiti that reads "loser" as a picture of him, which has an arrow on it, but in the next scene, the arrow is missing. It is not likely that Squidward cleaned it up since he looks at SpongeBob at the time.
The ice cubes in the vase should not be floating and sinking up and down.
Assuming that Sandy Cheeks is either a college student or graduate in *marine biology,* she would have already known that many sea-creatures, such as a sea sponge and a squid, could not survive in her dome without sea water.
Putting a teabag in that much water, the water helmets, would make it weak not strong.
When Patrick says, "Who's Ready?", his eyelids are pink instead of purple.
When SpongeBob puts down his binoculars, his teeth are yellow for one frame.
When SpongeBob runs past Conch Street to get his reef blower started, Squidward is gone.
When SpongeBob and Patrick are dried up, they have no clothes on.
Stephen Hillenburg's name is misspelled "Hilleburg" in the writing credits.
Sandy tells SpongeBob and Patrick that if they needed water, they should've asked. SpongeBob DID ask for water earlier.