BBC News - Fukushima: What happened - and what needs to be done
seawater
Oceanographers urge more stringent monitoring of radioactivity at sea - English
Nuclear-Free Planet | TEPCO: Tritium Density Result of Water Quality Survey inside the Port of Fukushima Daiichi NPS (Follow-up Information 10)
Should Fukushima's radioactive water be dumped at sea? - environment - 23 August 2013 - New Scientist
S. Korea, Russia to survey radiation in seawater
Hamaoka reactor likely wrecked in seawater accident