She trades her voice to the Sea Witch for legs, but every step she takes feels like walking on sharp knives.
Ariel and Prince Eric defeat Ursula and get married, bridging the two worlds in a "happily ever after". The Live-Action Reimagining (2023)
The prince marries another woman. To save herself, she must kill him, but she refuses and dissolves into seafoam. However, because of her selflessness, she becomes a "daughter of the air" with a chance to earn a soul through 300 years of good deeds. The Animated Classic: Disney (1989)