In Iraq, masgouf is part of the national cuisine, but it's getting harder to find as the country still reels from war, sanctions, water quality and economic problems.
Sabah Arar/AFP/Getty Images
Divers around the open-ocean aquaculture cage at the Cape Eleuthera Institute in the Bahamas. These cages are not currently used in the Gulf of Mexico, but represent one type of farming technology that could work in the region.
NOAA/with permission from Kelly Martin
Thierry Chopin from the University of New Brunswick examines a raft that holds strings of seaweed. The seaweed grows around pens of farmed salmon and soaks up some of the nutrients that would otherwise pollute the Bay of Fundy.