Paul Greenberg at the New York Times explores the current state of fishing for bluefin tuna and it’s not looking good.
Tuna then are both a real thing and a metaphor. Literally they are one of the last big public supplies of wild fish left in the world. Metaphorically they are the terminus of an idea: that the ocean is an endless resource where new fish can always be found. In the years to come we can treat tuna as a mile marker to zoom past on our way toward annihilating the wild ocean or as a stop sign that compels us to turn back and radically reconsider.
This is depressing beyond words, but to be honest not remotely surprising.