Call me ignorant but isn’t sustainable fishing totally feasible its just how we go about calculating it completely too simplistic and optimistic to determine when enough is enough?
Like, we have been fishing since like the start of civilization. Things haven’t been a problem until we really started ramping up commercial fishing a hundred or so years ago.
I feel like this issue falls under what I call the dead body problem. Most people are fine swimming in the ocean. We can all collectively agree that there are dead bodies in the ocean. Conversely, we can all collectively agree that we would not lounge in a hot tub if there was a dead body in it. Thus, most people have an inflection point in the size of the body of water with a dead body in it and their willingness to go into said body of water. Hell if I know how to calculate that but it logically obviously exists.
same principle with fishing I would argue. except the inflection point is what is considered maximum sustainable fishing. My gut tells me a numerical value dependent on variables we don’t fully understand exists. However, we don’t understand the ecology of it all to derive a useful number.