Atlantis would be full of tunnels, like Moon. And if you wore a suit, like in Moon, you could go into flooded areas, where gravity wouldn't work and you could float around, like Moon. Atlantis could be an abandoned underwater military base or something, so there would still be a lot of indoor space. It would also follow the trend of BOII maps being related to BO1 maps.
Die Rise - Ascension
Mob of the Dead - Call of the Dead
Buried - Shangri La
Atlantis - Moon
Omg u idiots it would be like moon yes your underwater but your inside like how on moon you can take off your mask it would be like in a giant tank you can breath infor example spongebob sandys home -_____-
I believe he was saying he had enough bullets for everyone in Atlantis. However, Stu's intelligence is fairly low if not moderate. Since they were in Atlanta, it makes sense why he said Atlantis. His intelligence isnt up there with Marlton, so take that into consideration.