Continuity mistake: When the maid scolds Louis for making noise, the blood stain on the wooden door increases between shots.
Continuity mistake: When Louis is chasing Sebastian, all the stuff he breaks disappears when it hits the floor.
Continuity mistake: When Ariel is taking a bath in Eric's castle and the women are washing her tarp thing, a pocket appears which later changes to a button.
Continuity mistake: When Sebastian follows Ariel into the grotto where Ariel keeps her human stuff, the door swings shut. When Ariel is going to the surface to look at the ship, the stone that closed the grotto has been moved out of the way magically. She just swims right out.
Continuity mistake: In the kitchen scene the chef pins down Sebastian with a fork, leaving two holes in the table. However, the holes are there before he does this.
Continuity mistake: When Eric's statue is uncovered, the dog crouches next to it and growls. A frame later, the dog stands far away, standing, and totally calm.
Continuity mistake: When the movie begins and the dolphins surround Eric's boat it's completely empty, yet when the angle changes there are sailors everywhere.
Continuity mistake: When the movie starts, Sebastian conducts the orchestra and his baton switches hands between shots.
Continuity mistake: The barrels that Sebastian uses for Ariel to float and swim to Eric's boat weren't there in any previous shots, and simply pop-out of nowhere.
Continuity mistake: When Ariel arrives at the dining room, there are just 2 chairs and the table is almost empty. When the angle changes a chair appears together with cutlery, chandeliers and fruit bowls.
Continuity mistake: When Ariel is taking a bath, look behind her - the leaves disappear and the stone fish changes appearance between shots, and the faucet disappears in the second angle.
Continuity mistake: Plants suddenly appear on the rock where Ariel climbs while flirting with Eric.
Continuity mistake: Eric walks on the beach with his dog, who sniffles something. Right then, the barren place swaps to having plants everywhere.
Continuity mistake: When Ariel becomes human she climbs on a rock at the beach. The appearance of the rock changes completely between shots.
Continuity mistake: When Louis dips Sebastian in the bowl, a pot appears on the right, and the jar on the left loses its lid.
Continuity mistake: When Ariel's dad hugs her goodbye, from the angle in front she is above his shoulder and hair, but from the immediate opposite angle she is standing in a lower position, his hair covering her face.
Continuity mistake: While Flounder is chased by the shark, moss suddenly appears on the anchor.
Continuity mistake: After Ariel has saved Eric and both lay on the beach, his forehead is clear. When the angle cuts, bangs of hair are covering it.
Continuity mistake: All the sailors running around the deck disappear in the wide angle when the hurricane begins.
Continuity mistake: Eric's statue suddenly disappears from the ship's deck when the storm breaks.
Answer: Yet another Disney urban legend.
Jazetopher