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SPIRULINA OCEAN FARMS
The world fish catch from the oceans peaked out in 1990 but the human population continues to grow.
The solution for fish on the table has been to increase the extent of land based and seaside aquaculture.
Captive fish have been fed with protein powder obtained form other fish taken from the sea and agricultural products grown on farms which should be used to produce food directly for humans.
A stable and sustainable adjunct to ocean fishing appears to be the creation at the seaside of micro-oceans where one can duplicate all the essential links of a food chain leading from micro algae up to highly desirable pelagic table fishes, including also the harvesting of smaller fishes, crustaceans, and molluscs.
By borrowing water from the ocean, it’s possible to grow Spirulina and Artemia in part of it but pass the bulk of it through a specially-planted mangrove forest where fish and shrimp are grown on the Spirulina and Artemia plus the concentrated and diverse bottom life and insect life which aggregates around the mangroves.
When the water passes out of the mangrove forest it goes through a mollusc ranch where microalga and detritus are completely removed, allowing clean sea water to return to the sea.
The micro-ocean farm yields 860 times more than the catch from an equivalent ocean area. Micro-ocean farms totalling the size of Sudan or Guinea could provide 50 million tons of high protein foods. To do the same with cattle would require a land area equivalent to China, plus the United States.
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