The fountain from the movie is now on display at "Disney's" "MGM Studios" at Walt Disney World. The mermaid fin Daryl Hannah wore is behind the bar at Planet Hollywood in Downtown Disney.
Credited with introducing the girl's name Madison, which has since become one of the most popular names for newborn girls in the early 21st century.
Ariel in The Little Mermaid (1989) was originally blonde, but was made a redhead to look different from Madison.
Robert Short is credited as the man behind the mermaid costume. He initially pictured the mermaid with a dolphin-esque tail as it would make "biological sense", but Ron Howard rejected the design insisting on a more tropical look. Short eventually created a tail based on koi fish. He would later admit that this was a genius idea since "you lose a lot of color underwater" the red tail stood out more.