I haven't seen much mentioned about the area that housed the 20K ride after it closed. I've read that the ride closed in 1994, but sat derelict until 1996 when Ariel's Grotto was built on the shore of the lagoon. I visited Disney World for the first time in 1998, and, even though I was only six at the time, I was curious as to why there was a giant lagoon there that seemingly served no purpose. I have a photo of a small King Triton fountain that was just off the shore of the lagoon, with his trident pointed into the air and water shooting from the ends of it. Does anyone know if that fountain remained there until the lagoon was drained in 2004? Another photo that I have (most likely taken from the Skyway) shows the lagoon, with what appears to be one of the submarines submerged in the middle of it.
I also took photos with characters (Captain Hook, Smee, Chip, and Dale) in what appears to have been the queue for the 20K ride, with the lagoon in plain sight behind us.