- Adaptation Displacement: The movie is a little more well-known than the book.
- Awesome Music: The cover of "Island In The Sun" that plays over Raymond and Aquamarine's dance.
- Designated Hero:
- Done on purpose with Hailey. She plans to use Aqua's wish to force her mother to stay in town. Then she eventually realises that it's her mother's dream to go to work in Australia - and learns An Aesop.
- Played straight with Leonard. Though he seems to be a decent guy, it's implied he used his wish from Aqua to gain the attention of a woman he's been interested in, without considering her say in the matter. Unlike with Hailey, he's never called out on this.note
- Heartwarming Moments: After Raymond says he doesn't love Aquamarine her father conjures up a huge storm to take her back to the sea. Claire and Hailey swim out - Claire ignoring her fear of drowning - to save her. She asks why and they reply "because we love you, Aqua". Having been taught about the nature of love now, Aqua's father calls off the storm.
- Hilarious in Hindsight:
- The scene where Aqua stands before the ocean preparing to go home mirrors the opening for Taylor Swift's "Out Of The Woods" video.
- The two girls discuss the possibility of dying a Slasher Movie death. Ten years later, Emma Roberts has to experience that in Scream 4, American Horror Story and Scream Queens (2015).
- Just Here for Godzilla: People who didn't like the film admitted that it was worth watching for Sara Paxton's hilarious performance.
- Les Yay: Claire and Hailey. And how! They sleep in the same bed and spend the whole movie not wanting to be separated, acting like Star-Crossed Lovers. Also both of them and Aquamarine. At the end, they even say that they love her.
- Narm Charm: Aqua's attempts to dance to "Island in the Sun" are so terrible they're absolutely Adorkable.
- Nightmare Fuel: The climax where Cecilia pushes Aquamarine off the pier for Aquamarine's angry father to suck her back to her home is extremely intense. A whirlpool just violently sucks Aqua as the sky suddenly grows dark and the sea turns as black as ink.
- Older Than They Think: The Aesop that true love isn't always confined to romantic relationships appears here, predating Frozen and Once Upon a Time by six years.
- Special Effect Failure: The conversation between Raymond and Aqua in the sea is a pretty obvious green screen effect.
- What Do You Mean, It's for Kids?: While it is family friendly for the most part, it's quite surprising that the movie forgoes the Seashell Bra and gives Aqua Godiva Hair instead.
YMMV / Aquamarine