The Little Mermaid: Ariel's Undersea Adventure

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 Park, where it is titled 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.

Source: Wikipedia