"Levels of radioactive substances have jumped in the Pacific seabed off Japan near the nuclear power plant crippled by a massive tsunami in March, according to the plant operator.
Seabed samples collected some 15 kilometres (nine miles) from the Fukushima Daiichi nuclear plant contained 1,400 becquerels of radioactive caesium-137 per kilogramme, Tokyo Electric Power Company (TEPCO) said.
The level is more than 600 times higher than a maximum 2.3 becquerels per kilogramme detected in the past off the northeastern prefecture of Fukushima.
The samples, taken on Friday, also contained 1,300 becquerels of caesium-134 and 190 becquerels of iodine-131, according to a TEPCO statement issued late Tuesday after the first analysis of seabed soil since the March 11 disaster."
AFP had the story May 4, 2011.