Korean coastal waters are so far safe from the leaks at Japan's Fukushima nuclear plant, studies by the National Fisheries Research and Development Institute show.
The institute studied samples of ocean water collected off the coasts of Korea since 2011 and found no radiation in any samples, it said Tuesday.
The institute studied water samples once every two months since the 2011 disaster. They were collected from 75 different spots in waters surrounding the Korean Peninsula as well as the East China Sea and sent to the Korean Institute of Nuclear Safety, which found no increase in traces of radioactive iodine or cesium.
Suh Young-sang at NFRDI said the currents lead away from Korea and it will take five years for radioactive water to circle the earth and reach it from the other side, by which time the effect would be "minimal" since it would be so diluted.