That dolphin thing reminds me of Sea Quest DSV, that was the greatest show (until the last few seasons...)! Anyway, the dolphin, Darwin, could swim all around inside the submarine in tubes and it had pools it could surface in... Of course it could talk too...
Anway, the attached picture here is one I scanned out of a
Freshwater and Marine Aquarium magizine back in probably about '94... I no longer have the original but over the years I've touched this one up and got it looking as best I could... This is really some guy's personal aquarium, all the coral and rock work is fiberglass and the back is made from a transparent blue plastic the is back lit with lots and lots of florescent bulbs to give the illusion of depth... I forgot how many gallons it is... Pretty neat, eh? It's always been one of my favorite pictures.