According to ClimateWire (subscription required), Miami Beach is planning an underwater park just off the coast.  Not that I would ever be snarky, but given how often parts of Miami Beach are now under water during high tides, even in the absence of extreme weather, I think that they could save some money by just waiting a few years.  At some point in the not too distant future, climate change will put Miami Beach’s existing parks under water.  They won’t have to build an expensive new park in the ocean and the existing parks will be much more convenient for the residents to use.