Club SpongeBob / My Pretty Seahorse - S3-E12
Revealing mistake: In Club SpongeBob, when SpongeBob, Patrick and Squidward are in the forest, Squidward asks the magic conch shell if he can have something to eat. Straight after he asks "Can't you say anything else but 'No'?", it has a close-up of the shell. But Squidward's arm appears to be yellow, like SpongeBob's. This error was later corrected in 2019 when the episode was remastered for digital releases.
Club SpongeBob / My Pretty Seahorse - S3-E12
Continuity mistake: My Pretty Seahorse: After Krabs tells SpongeBob the restaurant is not a place for a live horse, when SpongeBob walks out with the seahorse the swinging door to the Krusty Krab's kitchen opens in the opposite direction than previous shots.
Club SpongeBob / My Pretty Seahorse - S3-E12
Continuity mistake: In "My Pretty Seahorse", Spongebob is walking outside with Mystery and a customer with a drink and a plate is watching him go by. In the next shot, Squidward places a bowl of onions underneath his face, and his plate and drink have disappeared.
Club SpongeBob / My Pretty Seahorse - S3-E12
Continuity mistake: In "My Pretty Seahorse", Squidward finds a bowl of onions right under his nose on the counter. In a few shots, from behind Mr. Krabs, the onions have disappeared.
Club SpongeBob / My Pretty Seahorse - S3-E12
Continuity mistake: In "My Pretty Seahorse", Spongebob is using a spatula with slots in it. Later, when Mystery eats it, the spatula is now completely flat.
Club SpongeBob / My Pretty Seahorse - S3-E12
Continuity mistake: In "My Pretty Seahorse", Spongebob places a tray of Krabby Patties on the counter, which Mystery promptly eats, leaving an empty tray. In a few shots, the tray has disappeared from the counter.
Club SpongeBob / My Pretty Seahorse - S3-E12
Continuity mistake: In "My Pretty Seahorse", Spongebob is watching Mystery from behind a rock, as she eats flowers. She eats a flower right next to an uneaten one. Later, she eats the previously uneaten flower. In the next shot, the flower has now regenerated and Mystery eats it again.