upon first glance this might look like people swimming on top of a submerged city. it is in fact an ad created for HSBC created by ogilvy & mather mumbai ad agency, india. the whole idea behind the campaign is to raise awareness of the dangers of global warming. an aerial photo of a city’s skyscrapers is glued to the base of a swimming pool to create the effect.

global warming swimming pool by ogilvy and mather

— via neatorama