Worried about radiation these days? You’re not alone. The Japanese government on Tuesday lifted its rating of the Fukushima Daiichi crisis to the highest level on the International Atomic Energy Agency’s incident scale, leaving many wondering what the impact will be on the environment. Among the host of concerns is the region’s seafood supply: thousands of tons of radioactive water were pumped into the ocean in efforts to cool the reactors. For sushi addicts, this doesn’t necessarily mean you have to give up your favorite delicacy. While sushi’s origins are Japanese, its ingredients are mostly sourced from elsewhere, as this infographic shows.