Buster: ovbiously, the blue part here is land.

I'd love to think that, but this is America, where basic geography might as well be Egyptian hieroglyphics to most people.

maybe they think it's a small island?

Maybe they're thinking the current Iranian state succeeded Atlantis and they're placing the latter in the Atlantic instead of the Mediterranean, as Dr. Jones correctly did after reading the Hermocrates? ¯\(°_o)/¯