Corrected entry: During the song "For a Moment" Ariel revisits her treasure cave. All of her stuff has returned, despite it being destroyed when she was a teenager by her father. As she was unable to return to the sea until now because of Morgana, she couldn't have restocked it.
Corrected entry: In the scene where Ariel is calling for Melody (after the florist has just dropped a flower), she turns to Carlotta but Carlotta has already been stood there about 3 seconds before Ariel wants to talk to her. It was as if Carlotta knew she was going to talk to her even though she would have no way of knowing.
Correction: Ariel's lived in the palace now for 12 years, so Carlotta has gotten to know her better. So Carlotta would probably know when something was wrong with Ariel.
Corrected entry: Near the end, when Morgana freezes up after King Triton's blast, notice that she keeps on changing positions inside the ice. In one shot, she has her eyes and mouth closed, in a later shot, her eyes and mouth are open.
Correction: This was done to show that she's doomed to remain conscious, though frozen, forever.
Corrected entry: Everyone keeps calling Melody a teenager. Though 12 years old isn't really a teenager, but a preteen.
Correction: Nobody even said 'teenager' back then. King Triton said it in the first movie, so it might be a mermaid term. Also, we have no idea how they keep track of time when they can't usually see the sun.
Correction: As a doting father who misses his daughter, it was Triton who restored everything.