Fukushima-contaminated tuna caught off San Diego coast

May 29th, 2012 - 7:26 pm ICT by Aishwarya Bhatt  

San Diego, May 29 (THAINDIAN NEWS) Scientists have discovered high radioactivity levels in bluefin tuna caught off the coast of California. Last year, the huge earthquake in Japan generated a nuclear disaster. This has raised significant contamination concerns.

Bluefin tuna’s migratory patterns start in the water of Japan’s coast. The tuna then travel across the entire Pacific Ocean, to later arrive to California.

Researchers claim that fish examined is safe for human consumption. Nevertheless, two radioactive isotopes were discovered in the bluefin tuna; cesium-137 and cesium-134. Although cesium-137 entered the Pacific Ocean as a result of atomic weapons tests carried out during the1960’s, researchers claim that fallout from the Fukushima reactor is the only possible reason why cesium-134 has entered the Pacific.

Because of the nuclear crisis generated by last year’s earthquake, the Japan government has enacted tougher radioactivity tests. As of April 1 of this year, the limit on allowable radioactive cesium in food in Japan was lowered from 500 becquerels per kilo to just 100.

Nevertheless, the scientific research on San Diego’s tuna has left new causes for concern. The research team is planning to continue its study on a new sample of blue-fin tuna to be caught on the coming months, in order to analyzed any potential hazards for human health.

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