Comment by AndrewKemendo
2 years ago
Tuna are Megafauna
Humans deterministically deplete ingenious populations of megafauna to extinction
The counter to this to date was megafauna herding via property boundary permanence. aka fencing for cattle
So the only solution would be to figure out how to do ocean megafauna herding because reducing consumption is unlikely. Which would require massive scale 3 or 4 dimensional fencing.
Sounds like a technical problem that can be solved if extremely difficult
Also the externalities would be bonkers most likely
Edit: Looks like this is starting to happen for tuna as of last year https://www.sojitz.com/caravan/en/special/tuna/1.html
The solution you are describing is aquaculture aka fish farming. It already exists for many species.
Giant Tuna are Megafauna
That is a whole different kind of problem to farm than having a humdrum sub-mega fauna fish farm
Problems are more akin to trying to raise farm grown Elephants