Radioactive Tuna Live in California


Chicken of the Sea, also known as tuna, is bringing radioactive fallout to the shores of Califonia.  Scientist are “kind of startled” that a blue fin, that traveled 6,000 miles would still have high levels of radiation.  Plankton and smaller fish were discovered with raised levels of radiation from the waters off Japan after the nuclear reactor at Fukushima was damaged in the magnitude-9 earthquake, but to find elevated levels off the US coast in a large fish is disconcerting.

One of the largest and speediest fish, Pacific bluefin tuna can grow to 10 feet and weigh more than 1,000 pounds. They spawn off the Japan coast and swim east at breakneck speed to school in waters off California and the tip of Baja California, Mexico.

Five months after the Fukushima disaster, Fisher of Stony Brook University in New York and a team decided to test Pacific bluefin that were caught off the coast of San Diego. To their surprise, tissue samples from all 15 tuna captured contained levels of two radioactive substances — ceisum-134 and cesium-137 — that were higher than in previous catches.

To rule out the possibility that the radiation was carried by ocean currents or deposited in the sea through the atmosphere, the team also analyzed yellowfin tuna, found in the eastern Pacific, and bluefin that migrated to Southern California before the nuclear crisis. They found no trace of cesium-134 and only background levels of cesium-137 left over from nuclear weapons testing in the 1960s.

If scientists are baffled by the travaling radioactive tuna, shouldn’t we also be concerned?

Source: Huffington Post

 



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