OSAKA, March 30, 2011 (AFP) - The level of radioactive iodine in the sea off Japan's disaster-hit Fukushima Daiichi nuclear plant has reached its highest reading yet at 3,355 times the legal limit, Jiji press said Wednesday.
On Sunday, iodine-131 measuring 1,850 times the legal maximum were reported a few hundred metres (yards) offshore, up from 1,250 times the limit Saturday, but officials ruled out an immediate threat to marine life or to seafood safety.
A 9.0 magnitude earthquake and tsunami on March 11 knocked out the cooling systems of the Fukushima plant's six reactors -- triggering explosions and fires, releasing radiation and sparking global fears of a widening disaster.
Radiation from the plant northeast of Tokyo has wafted into the air, contaminating farm produce and drinking water, and seeped into the Pacific Ocean.
