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 year apart. When a mermaid turns fifteen, she is permitted to swim to the surface for the first time to glimpse the world above, and when the sisters become old enough, each of them visits the upper world one at a time every year. As each returns, the Little Mermaid listens longingly to their various descriptions of the world inhabited by human beings. When the Little Mermaid's turn comes, she rises up to the surface, watches a birthday celebration being held on a ship in honor of a handsome prince, and falls in love with him from a safe distance.