Japan decides to release Fukushima wastewater into ocean

[FBaggins]

5. No... see #4 above

They’ve effectively done that already - removing virtually all radionuclides.

Except tritium... which is far too hard to remove from that much water.

Fortunately... you could probably drink tritiated water for the rest of your life without effect. Diluting it in the sea was always the right way to deal with it