How about this thing that will be under the surface of the water? Cactus Dome, Runit Island http://www.theguardian.com/world/2015/jul/03/runit-dome-pacific-ra

How about this thing that will be under the surface of the water? Cactus Dome, Runit Island http://www.theguardian.com/world/2015/jul/03/runit-dome-pacific-radioactive-waste http://www.theguardian.com/world/2015/jul/03/runit-dome-paci... Basically, it's all the nuclear waste from 12 years of 1950s nuclear bomb testing, sitting at sea level under 18 inches of concrete. You can see it on satellite view here: https://goo.gl/maps/EMRphCjir142 https://goo.gl/maps/EMRphCjir142