They are designing these things right now..

They have a “stingray” shaped city in design.  There is often talk about the sustainability of food, energy and cities in general.  More and more people seem to be moving to urban centers due to the economic activity however, they may not be sustainable as the populations grow.  Some very clever architects and city planners have come up with the idea of floating cities as a way to partially solve these issues.  is this reasonable or absolutely crazy?

In addition to the vision of the “stingray” shape city, there are others with similar ideas.  Below is a video covering such competing cities if you will:

Not that long ago, a Japanese company put forward a project of a floating artificial city — a giant floating island that can become a home for at least 100,000 people. The city of the future will look like a colony of giant water lilies.
There is another project about the construction of new cities in the sky. The designers can already give the dates. The new module-like cities will create a whole neighborhood in the Pacific Ocean by 2025. The residents of the city will mostly live in skyscrapers placed in the center of water lilies. The towers will be surrounded by artificially created fields and forests. Additional residential areas with prestigious mansions will be built on the shores of the artificial islands. The climate on the floating islands is promised to be good and pleasant. The modules will be drifting in the Pacific Ocean along the equator, so the average temperatures will make up 26-28 degrees above zero. Agriculture will be developing and prospering, the costs on electricity will not be that large.

Do you think anyone would be able to sustain the upkeep on such structures in an efficient way?  They have the plush islands off the coast of Dubai but even those are made of sand underneath so it may not be a complete comparison.

thanks to qz.com for the great info

thanks to jacques rougerie foundation for the great pic