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Chemistry

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    $\begingroup$ This bit however--the water is drawn out from a less concentrated environment... to a more concentrated out--first off, you probably mean "one" there but, second, you have this backwards, right? or you're talking about the water being drawn to something with a more concentrated amount of sth-other-than-water? $\endgroup$
    – lly
    Commented Jul 20, 2018 at 16:25
  • $\begingroup$ @lly Thanks! Though I did take enough care to pick the right sources/references, there is of course always a possibility that I may have erred somewhere. And yes, I had a feeling someone or the other would raise the "concentration" problem :P $\endgroup$
    – paracetamol
    Commented Jul 20, 2018 at 16:26
  • $\begingroup$ @lly I've edited the answer to address that last issue. I hope that works O:) $\endgroup$
    – paracetamol
    Commented Jul 20, 2018 at 16:35
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    $\begingroup$ Shouldn't we be asking: Why have we evolved a sensitivity to the smell of rotting fish? If seagulls can smell it they certainly don't mind it. $\endgroup$
    – D Duck
    Commented Jul 21, 2018 at 21:12
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    $\begingroup$ @DDuck As far as I understand it, us evolving an aversion to the smell of rotten anything (not just fish) is Nature's way of telling us that some of the by-products of microbe induced decomposition of most foodstuff isn't meant to find its way into our mouths (much less our stomachs). Seagulls, vultures, flies, etc have mechanisms within them that nullify/greatly diminish detrimental effects of consuming such food (that would otherwise be seen in humans) ;-) $\endgroup$
    – paracetamol
    Commented Jul 22, 2018 at 13:59