One of my favorite attractions at EPCOT was The Living Seas, not because of the variety of sea animals but because all of it went down in an undersea base. This probably also explains why I was into the first season of seaQuest DSV.
2006: My wife and I were on the worst double date ever at EPCOT and we decided to head over to The Living Seas after the other couple left. As the elevator took us into the underwater base, I noticed the only thing moving in the elevator car was the floor; there was no undersea base. It was like someone told me there was no Santa again. This also explains why seaQuest DSV was eventually canceled.