Cesium from Fukushima has spread around the Pacific Ocean and plankton samples contain small amounts of cesium.

A lot of the fish caught in the Pacific Ocean are showing small levels of cesium from the Fukushima meltdowns.

When large numbers of people are exposed to small levels of radioactivity, a small danger for each person can add up to a substantial number of additional deaths. It might mean, for instance, 101,000 cases of a certain kind of cancer in a population of 10 million, instead of 100,000. 1000 deaths is worth avoiding if possible, but there is no reason for any one person to go to great lengths to avoid this small danger.