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Feeding the World with Deep - Feeding the World with...

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Feeding the World with Deep-Sea Fish Farms by Chris Arnold Listen Now add to playlist A school of fish raised in a deep-sea Kona Blue fish farm off the coast of Hawaii. VIDEO: Find Out How Kona Blue's Open-Ocean Fish Farms Operate Video courtesy Kona Blue/ Big Island Television Scroll down to read about environmental issues involved in running a fish farm. Morning Edition , March 21, 2006 · The world's ever-growing population is eating more and more fish and the oceans can't keep up. Fishing has depleted wild stocks of tuna, swordfish, cod and many other species. Some scientists say the answer is a massive growth of fish farming -- a so-called "blue revolution" to help feed the planet. So far, fish farming has occurred on land or in protected harbors. But some see a future with large-scale off-shore fish farms in waters hundreds or thousands of feet deep. One of the first companies venturing off-shore is Hawaii-based Kona Blue. It is raising fish in giant, netted cages off the coast of Hawaii, submerged in waters some 200 feet deep. Some scientists say that farming in such deep waters can avoid environmental
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concerns raised by fish farms close to shore. If you get too many caged fish in a harbor, the fecal matter will pollute it. But offshore at the Kona Blue site, powerful ocean currents constantly flush so much water through the farm that Kona Blue reports it can't detect any change in nutrient levels up-current versus down-current of the farm.
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