You suggested that GD could find his answer with a couple of MSDS. So, where is the MSDS for seawater?
Could you not pay attention to the part where GD said "Chemical N, P and K is no more harmful than table salt"?
There are two separate parts here: 1) Chemical NPK is no more harmful than table salt and 2) Do people swim in the ocean
You said that GD was wrong and that a couple of MSDS would reveal that he was wrong.
I pulled the MSDS and showed that GD was right that chemical ferts are less harmful than table salt. I assume that people swim in the ocean, but I haven't checked today.
But, to help me and others pay attention, where is this MSDS for seawater that you said would help us to know if GD was right?