The left has hysterically exaggerated dangers of radioactive chemical elements for a very long time. Such elements that decay quickly are already weak. Elements that decay more slowly are virtually harmless unless consumed. The more slowly decaying elements decay much faster in fish, and the next generation of fish are fine.
Strontium 90 and Cesium 137 are still nasty with half lives around 29 years.
Meanwhile Hiroshima and Nagasaki are doing ok.