I found this list of 10 awesome underwater places, and now I've added some more things and places to my bucket list.
Elevator at the AquaDom in Berlin. I would never leave it.
Serpent Slide at Atlantic Paradise. Then slide/ride goes through a shark infested lagoon for all you "thrill-seekers!"
Jules' Underwater Lodge in Key Largo, Florida. You legitimately have to dive down into the water to get into this lodge, relax, and just watch the underwater world.
Poseidon Undersea Resort in Fiji. If you have the $15,000 to spend, they'll give you two nights stay in this underwater resort and even give you a submarine to use whenever you'd like. Plus- All the walls are windows.
Hotel Conrad Rangali Island Maldives. The pictures sell it. Hellooooo, honeymoon.
Seriously... I can't even explain the amazingness I feel inside when I imagine staying in these places. Sugar Daddy, seriously, WHERE YOU AT?!