Plus other mass mortalities of marine animals in Peru, Chile , etc that where blamed to climate and put under the rug. I'm not denying a role of climate change on that, just that we don't know what really happened but they positively happened after Fukushima.

Marine pathology is not easy, invertebrate viruses are practically unexplored, and you need to allow a resources to study that (Hint: Will not happen, because... hum, would be embarrasing)