Woods Hole Oceanographic Institution will release their findings in mid February on samples and studies taken from the Pacific near and around Fukushima fallout. They already said since the melted reactors are still leaking radiation into the environment it will be difficult to quantify the collective damage as it is still adding up.
Heck with Iran going nuclear, North Korea already nuclear, along with the number of nuclear plants we currently have running that could be Tsunamied, we will probably be living with radiation for quite awhile.