The Little Mermaid: Ariel's Undersea Adventure The Little Mermaid: Ariel's Undersea Adventure The Little Mermaid: Ariel's Undersea Adventure (stylized The Little Mermaid ~ Ariel's Undersea Adventure) is a dark ride attraction based on the 1989 Disney animated film "The Little Mermaid", located in Paradise Gardens Park at Disney California Adventure and in Fantasyland at Walt Disney World's Magic Kingdom, where it is titled Under the Sea: Journey of the Little Mermaid (stylized Under the Sea ~ Journey of the Little Mermaid). The ride opened on June 3, 2011 at Disney California Adventure, and on December 6, 2012 at Magic Kingdom. In the early-to-mid-1990s, Walt Disney Imagineering
The Little Mermaid (1989 film) Andersen tales. Development started soon after "Snow White and the Seven Dwarfs" in the late 1930s, but was delayed due to various circumstances. In 1985, Ron Clements became interested in a film adaptation of "The Little Mermaid" while he was serving as a director on "The Great Mouse Detective" (1986) alongside John Musker. Clements discovered the Hans Christian Andersen fairy tale while browsing through a bookstore. Believing the story provided an "ideal basis" for an animated feature film and keen on creating a film that took place underwater, Clements wrote and presented a two-page treatment of "Mermaid" to Disney CEO