Radioactive tuna reveal migration patterns

Pacific bluefin tuna affected by radiation released at Fukushima following Japan’s 2011 nuclear disaster have allowed scientists to better understand the fish’s migration habits.

Young bluefin tuna spawn in the waters surrounding Japan before either remaining in the western Pacific or migrating eastward to California. Fish caught in Californian waters have been shown to have trace amounts of cesium-134 and cesium-137, two of Fukushima’s telltale radioactive isotopes.

Scientists believe that this discovery will help to track the trans-oceanic migration patterns of Pacific bluefin tuna and help with their conservation by helping to end overfishing of certain populations.

Read more at Stanford University