Guests board their own clamshell vehicles as they embark on The Little Mermaid ~ Ariel's Undersea Adventure, in which Ariel's story unfolds in colorful scenes filled with Audio-Animatronics characters and memorable music from the hit Disney animated motion picture, "The Little Mermaid." The Disney California Adventure park attraction brings the popular motion picture to life in magnificent scenes where guests can sing along with Sebastian and friends, keep an eye out for the evil Ursula, and experience the romance of Ariel and Eric. Special effects transport guests "under the sea," taking them into Ariel's world in ways never before seen.
Here is a collection of screenshots from the following video.
Growing up in Los Angeles in the 70s/80s we visited Disneyland on a regular basis and often after school, before "Annual Passes".