The Question said:The Marvel encyclopedias state that Atlantians have both gills and lungs, and are amphibious. They simply cannot survive without regular contact with water for much longer than an hour or two.
The Question said:Yes, they have. The fact that Namor's mother stood on the deck of a ship, talked with his father, and had sex with him shows that they can breath in an oxygen environment. They just only last a few hours outside of water.
Mistress Gluon said:They also classify Hulk as having a seven strength class out of nine.
Mistress Gluon said:I still say Atlanteans haven't shown amphibious ability on some level aside from the current Wolverine issue, and it could easily be said they were modified using Atlantean tech.