Ariel's daughter in The Little Mermaid II is named Melody.
Melody is introduced as the child of Ariel and Prince Eric, and the film centers on her struggle between the human world and her mermaid heritage. Her parents try to keep her away from the sea because they fear Morgana, Ursula's vengeful sister, may target her.
The sequel was released directly to video on September 19, 2000, and presents Melody as a human-mermaid hybrid. Tara Strong provided her speaking voice, while Jodi Benson returned as Ariel. Melody's desire to explore the ocean echoes Ariel's own curiosity in the original 1989 film.
A common mix-up is confusing Melody with Ariel herself or with one of Ariel's sisters. Melody is not in the original film; she was created specifically for the sequel. She also chooses to reunite the human kingdom and merpeople rather than permanently become a mermaid.