Farmed shrimp is a gourmet product, not a dietary staple. It is, as Elaine Corets remarked to me in Brazil, “an exotic species farmed in ponds created by destroying local ecosystems and exported to wealthy countries for the consumption of overweight people who don’t need any more protein or cholesterol in their diet.” In the places where shrimp is farmed, food security does not increase, it decreases.

http://www.alternet.org/story/150419/the_dirty_truth_behind_america%27s_obsession_with_shrimp?page=3

“Mangrove wetlands go from being a multi-use public resource to a single-use private asset to a derelict waste.”

That reminds of fracking here in the U.S.