(FILE) Japanese Tuna Fishboat Exposed to Nuclear Ashes Near Bikini Atoll

TOKYO, JAPAN - JULY 19: Researchers check the radiation levels of a tuna on July 19, 1954 in Tokyo, Japan. All 23 crew members of the fishboat Dai 5 Fukuryu Maru were exposed to nuclear fallout of the U.S. Castle Bravo nuclear test while fishing tuna near Bikini Atoll of the Marshall Island on March 1, 1954. Chief radio operator Aikichi Kuboyama died six months later. (Photo by The Asahi Shimbun via Getty Images)