Sunday, November 10, 2013

The Devolution of the Seas

Humans are eliminating the lions and tigers of the seas to make room for the cockroaches and rats.


In addition to pollution, Alan B. Sielen in the this brilliant piece adds that issue of "sea food" for the ongoing disaster:


Another cause of the oceans’ decline is that humans are simply killing and eating too many fish. Today, the human appetite has nearly wiped those populations out. It’s no wonder that stocks of large predator fish are rapidly dwindling when one considers the fact that one bluefin tuna can go for hundreds of thousands of dollars at market in Japan. High prices -- in January 2013, a 489-pound Pacific bluefin tuna sold for $1.7 million at auction in Tokyo -- make it profitable to employ airplanes and helicopters to scan the ocean for the fish that remain; against such technologies, marine animals don’t stand a chance.

The problem is not just that we eat too much seafood; it’s also how we catch it. Modern industrial fishing fleets drag lines with thousands of hooks miles behind a vessel, and industrial trawlers on the high seas drop nets thousands of feet below the sea’s surface. In the process, many untargeted species, including sea turtles, dolphins, whales, and large sea birds (such as albatross) get accidentally captured or entangled. Millions of tons of unwanted sea life is killed or injured in commercial fishing operations each year; indeed, as much as a third of what fishermen pull out of the waters was never meant to be harvested. Some of the most destructive fisheries discard 80 to 90 percent of what they bring in. In the Gulf of Mexico, for example, for every pound of shrimp caught by a trawler, over three pounds of marine life is thrown away.


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