MIT tests self-propelled cage for fish farming

A self-propelling underwater cage developed and recently tested by an MIT researcher could not only cut costs for offshore ocean-based fish farms but also aid the movement of such operations into the high seas, avoiding the user conflicts and compromised water quality of coastal zones.

Fish farms account for more than half of the seafood produced globally; 40 percent of the seafood consumed in the United States is farmed in other countries and imported. However, very little of that comes from ocean-based farms.

[...]Recently he tested the approach at Snapperfarm Inc., an offshore fish farm in Culebra, Puerto Rico, that grows cobia in submerged cages. By fixing a pair of the propellers to the mid-depth of a 62-foot diameter Aquapod® fish cage in a horizontal line 9 feet apart, Goudey maneuvered the cage as well as any boat-based system.[...]

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