ROV footage on Asakaze, a Japanese research vessel chartered by Greenpeace Japan, conducting radiation survey work off shore of Fukushima Prefecture - sea bed survey and sampling of marine sediment. A gamma ray spectrometer is used to measure the distribution of radioactivity discharged from the plant, and sampling and the underwater videos/stills documentation are conducted by a Remotely Operated Vehicle (ROV). All samples will be sealed up before transport to independent laboratories in Japan and France.