The unexpectedly vast fallout from the bomb enveloped a distant Japanese tuna trawler named the Lucky Dragon No. 5 in a blizzard of radioactive ash.

Bluefin tuna is a high-priced food ingredient in Japan, and an integral part of the Japanese .

Instead of eating inexpensive and plentiful local fish in season, many Japanese go for trendy, expensive fish like tuna and salmon that have caused international outcries about overfishing.