Visit http://www.InsideTheMagic.net for much more from The Little Mermaid ride! On June 3, 2011, The Little Mermaid ~ Ariel's Undersea Adventure officially opened at the Disneyland Resort in the Disney California Adventure theme park. The day before, we were invited to preview the attraction, which is presented here in its entirety with binaural audio, so wear your headphones for the most enjoyment!