Shrimp farming in the Sahara desert.
a Korean project in Algeria that uses high saline ground water, and recycles shrimp poop to prevent local pollution, and wouldn't have the environmental costs of such farms in tropical countries.
and yes it is being tried in the US midwest.
sounds like it would work here in the Philippines where fish farming is being practiced too...
and not just for shimp:
Tilapia has been shown to grow just as well in such setups, and research is testing out other fish species using similar methods.