Little Mermaid Ride - Ariel's Undersea Adventure - California Adventure - 4K 2016 - Disneyland

The Little Mermaid ~ Ariel's Undersea Adventure (titled Under the Sea ~ Journey of the Little Mermaid in Walt Disney World) is a dark ride attraction based on the Disney animated film The Little Mermaid, located in Paradise Pier at Disney California Adventure and in Fantasyland at Walt Disney World's Magic Kingdom. 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 attempted to develop a Little Mermaid dark ride for Disneyland Paris and Magic Kingdom parks. Early plans for Tokyo DisneySea and Hong Kong Disneyland also included this ride. None of these versions were actually built, although a computer-generated ride-through animatic was included on the Platinum Edition DVD of The Little Mermaid in 2006.
Disney later went on to design and build a different version of the attraction for Disney California Adventure, as part of an effort to revitalize that park in the 2000s. The Little Mermaid ~ Ariel's Undersea Adventure opened on June 3, 2011 in an area of Paradise Pier formerly occupied by Golden Dreams.
In September 2009, Disney announced that Mickey's Toontown Fair at the Magic Kingdom would be demolished to make room for an expansion of Fantasyland. One of the new elements would be a Little Mermaid dark ride, much like the one slated for construction in California. Under the Sea: Journey of the Little Mermaid opened on December 6, 2012.
On March 20, 2014, the attraction at Disney California Adventure closed for maintenance. It reopened May 10, 2014 with several enhancements; new sea creature figures were added throughout the ride, a view of King Triton's castle was added, the "under the sea" scene was given a blacklight treatment, and the Ariel and Prince Eric figures' sculpted hair was replaced with realistic hair in the "kiss the girl" and "finale" scenes.