Reuters: Cesium remains dispersed throughout water column “from the surface to the ocean floor”
unlike some other compounds, radioactive cesium does not quickly sink to the sea bottom but remains dispersed in the water column, from the surface to the ocean floor.
Fish can swim right through it, ingesting it through their gills, by taking in seawater or by eating organisms that have already taken it in, [Study author Daniel Madigan of Stanford University’s Hopkins Marine Station]
Scientists: “Absolutely every one” of bluefin tunas tested from S. California was contaminated with Fukushima radiation — “We were definitely surprised to see it at all – and even more surprised to see it in every one we measured”
Pacific bluefin tuna migrating last year from coastal Japan to the waters off Southern California contained radioactive cesium isotopes from the Fukushima nuclear disaster, scientists reported Monday.
The tuna packaged it up and brought it across the world’s largest ocean,” said marine ecologist Daniel Madigan at Stanford University, who led the study team. “We were definitely surprised to see it at all and even more surprised to see it in every one we measured.”
[“We found that absolutely every one of them had comparable concentrations of cesium-134 and cesium-137,” said marine biologist Nicholas Fisher at Stony Brook University in New York state, who was part of the study group