Lyn MacDonald's post has gone straight to the point that Watson seems to miss. How can one be a legitimate spokesperson for maintaining the oceans as nature created them (as Watson claims to be) while defending putting any of the ocean's species into unnatural man-made facilities?
Where would Watson's logic end? We already have increasing numbers of ocean species in farms, even well inland.
Watson's logic ends in only one bleak place: The confinement and control of all ocean species, for food, or for fun.