Bikini Fish Contaminated -- At top is photo of a damsel fish caught in bikini lagoon after the explosion there of an atomic bomb. At bottom is radio-autograph made at the University of Washington, showing how the digestive tract has accumulated radioactive material picked up in food. Sports on fins show surface contamination from radioactive particles in the water. Photo at top was made with normal lighting using regular film. Bottom photo was made in darkness by placing the fish alongside a film highly sensitive to the radioactive material. July 29, 1949. (Photo by Associated Press Photo).