- And Introducing: This was the first movie for Christina Ricci.
- Real-Life Relative: Christina Ricci's siblings play extras in the swim meet scene.
- Troubled Production:
- Emily Lloyd was originally in mind to play Charlotte Flax, however, she was fired when Winona Ryder became available. She later sued Orion Pictures Corporation and was given a cash settlement.
- Lasse Hallström initially was supposed to make his directorial debut, but he had reportedly had butted heads with Cher and was replaced by Frank Oz and later Richard Benjamin.
- What Could Have Been: As mentioned above, Emily Lloyd was cast as Charlotte, she was recast after Cher stated that the blonde-haired Emily looked nothing like her and Christina Ricci, who have raven hair.
- Dudley Moore was originally considered for the role of Lou Lansky.
Trivia / Mermaids