Experts and economist can give you a drop dead date for viable tuna harvesting.  That date and time is know and quantifiable. Profit vs. sustainability.  Not much to discuss.  Do the math.
Thanks Nate... heaven knows that if product was plentiful, available and heathy you would not be covering this story.  Not much to report.  Nobody expect you to report on non-movement. This is like watching a football game with no players but with fans in the bleachers cheering.  Why bother?