[justa-hairyape]

They have been reported to be 528 total above ground nuclear tests from 1945 to 1996. The ocean tests I think are all classified as above ground and not underground. And many of those above ground tests occurred over ground a longs ways from the ocean.

Table of Known Nuclear Tests Worldwide: 1945-69 | 1970-96

[ransomnote]

Well, Hairyape, I have to say that Japan has surprised me after I thought I was past that.
They are exploring the possibility to turn Fukushima into a tourist destination: http://www.japantoday.com/category/kuchikomi/view/will-no-1-reactor-at-fukushima-become-a-future-tourist-spot