This is a special, two-part episode of Defunctland. Make yourself comfortable, but please remain seated at all times. And no smoking please—the smoking lamp is out.
As stated in the videos above, the submarines were taken to different Disney parks and resorts.
Many of the portholes from the submarines were sold at Disney Stores.
There is also a reference to the Nautilus in the rocks at New Fantasyland in the Magic Kingdom.
Do you know of any of the other remains of 20,000 Leagues Under the Sea: Submarine Voyage? Comment below!