Not even close.
*Total* urban area in the world was around ~3.5M km^2 in 2010[0], or 1% of total ocean area. Daily evaporation dwarves anything a couple thousands of drones can do in the morning.
*Total* urban area in the world was around ~3.5M km^2 in 2010[0], or 1% of total ocean area. Daily evaporation dwarves anything a couple thousands of drones can do in the morning.