The 20,000 Leagues Under the Sea ride used to be in Fantasyland in Disney World before it was replaced by Ariel's Grotto, where you could meet the Little Mermaid. Later, that was replaced with Under the Sea: Journey of the Little Mermaid, which also had a place to meet Ariel. This ride has a hidden tribute to it's predecessor with a hidden Nautilus ( the submarine on the ride) :
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