The fourth exploration

This time Captain Ishii with his CHOEIMARU took us to a point 2.4km south of 1F (Fukushima Daiichi Nuclear Power Plant), so far the closest point to 1F for us to explore the reefs along the coast of Fukushima. The point is in an area within a radius of 5km from 1F and access is limited by the government. So, Japan Coast Guard fleets watched us during the measurements.