You can see here that one of the main plankton currents includes the sea around Japan. This current extends to Alaska, Canada and California. Plankton are the base of the oceanic food chain. The whales and dolphins are at the top. In the North Pacific there are 300 species of fish, including salmon and sardines.
What might happen to the plankton and other creatures in the food chain if someone poured 12,000 tons of highly radioactive water from a nuclear facility into the sea? The answer must be - for this initial deposit of 12,000 tons, in the absence of any Plan B will be followed by a second 12,000 tons and so on - that there will exist the potential for a plankton food chain catastrophe.
Water weighs 1 tonne per m³. The quantity, to visualize it, is going to be (by my reckoning) 12,000 m³ . What does 12,000m³ look like? Imagine a swimming pool 12kms long x 1m deep x 1 m wide. That's about the size of it.
Now, in addition to this vast quantity of 'swimming pool' radiation the sea is, we have been told, continually being polluted with radioactive water escaping through undetected cracks and also from clouds of radioactive particles falling into it; and has been for more than 3 weeks.
This problem without a solution in sight must have implications beyond the mere demise of the Japanese sushi industry. Surely the unfolding situation now goes far beyond even Chernobyl, however the Japanese Government, TEPCO, the IAEA and other interested parties like to downplay it.
Simply put. Humankind's greed is killing the planet.