I've had this idea for a while, so i thought I'd share it with you guys. Bascically the theme would be changed to a lagoon where scientist where able to re introduce prehistoric sea life into today's (tomorrows?) ocean. All nemo related things would be removed. The sea gulls are replaced by a mother pterydactyl and her offspring dipping there heads into the water, appearing to be fishing.
The submarines would be painted a white with silver stripes. Instead of portholes, there would be one liniar strip of glass. you can kind of see what i'm going for in this rough sketch.
image by holmes.ashton96, on Flickr
Once inside the submarine, the spiel would come on explaining how their second base in Florida (reference to the dinosaur institute) has been traveling back in time and bring prehistoric animals from the past for years. They were able to send some of these animals here for Paleobiologist to try and re introduce them into the lagoon. You then begin your journey. The first animals you encounter various Ammonoidea (mollusk) searching for and eating plankton, you then move on and see Protostega (a large sea turtle) interacting with other present day (future?) sea turtles. From there you move on to the next scene, where Ichthyosaurs (dolphin shaped reptiles) searching for fish to eat as depicted here
itcheh2final by holmes.ashton96, on Flickr
you then pass by Plesiosaurus which, while swimming, accidentally hits your submarine which causes it to shake a bit. From there you move into the cave where a Plotosaurus attacks your submarine. You barley escape and make your way towards a group of Bananogmius feeding on mollusk. You then move on to a scene where multipule animals prehistoric and present day, some of the animals would include...Hesperomis (a prehistoric flightless bird) pelicans, various reef dwelling fish protosphyraena(an animal similar to a sword fish), xiphactinus and many others. You then arrive back at the loading station.
I want to apologize for any spelling errors lol.