The March 2014 issue of National Geographic featured Kenneth Brower’s article on Bluefin tuna. Back then, it led me to consider the issues raised by the tuna harvest. Now, in 2026, I am revisiting tuna from a philosophical perspective. As a full disclosure, I’ve eaten a lot of tuna and hence probably have an impressive mercury content. Which might explain my becoming a philosopher. That fish is brain food, of course.
Like many species, tuna is generally in decline. This is due to human activity, primarily overfishing and environmental degradation. Like most industries, the tuna industry has a regulatory organization, the International Commission for the Conservation of Tuna (ICCAT). Given the name, one might suspect it aims at conserving tuna. However, critics claim that ICCAT stands for “International Conspiracy to Catch All Tuna.” While this might not be completely accurate, ICCAT seems to ignore scientific data and in favor of keeping the catch limits high.
For example, in tracking catch volume ICCAT has divided the North Atlantic into western and eastern zones. The problem is that the management data is not accurate—the fish are treated as two distinct stocks that do not mix, but they do. So, fish caught in the western zone could be from the eastern zone and vice versa. As another example, the ICCAT models also fail to consider illegally caught fish, although this might be significant.
Like many regulatory entities, the ICCAT often ignores its own scientific advisors. In the case of ICCAT, catch limits have been set higher than the recommended levels for sustainability and it seems to ignore actual catch levels. Scientists have recommended that the catch limits be reduced and fishing be suspended during most of the spawning time for the fish.
While some might claim that these recommendations arise from a liberal agenda to destroy the fishing industry and from a hatred of all that is good and holy in capitalism, they were aimed at sustainable fishing. That is, the recommendation is aimed at preserving the industry rather than destroying it.
It might be contended that fishing companies would not engage in behavior that would destroy their industry. However, history shows that this is unlikely to be true. One reason is that there is a “strip mining” mentality towards resources. The aim is to get as much short-term profit as fast as possible and not worry too much about long term consequences. This approach is also fueled by the human tendency to discount the future and focus on the short term at the expense of the long term. For example, people often buy things they want (but do not need) on credit and end up suffering financially later. This also applies to handling resources such as tuna. Or, as some might prefer, living creatures like tuna.
This also ties into the “move on” attitude which is the view that once something has been stripped of its value, the thing to do is move on to another area in which to achieve fast and maximum profit. That these attitudes are prevalent is clearly shown by the way that other resources are often managed, such as fossil fuels, forests, and humans.
As such, it is reasonable to believe that fishing companies and their regulators would engage in the seemingly irrational activity of destroying their own industry by overfishing. One reason for this is that it has been done before. At one time Monterey Bay had a thriving sardine industry but in the 1950s this industry crashed in part due to overfishing. What has already occurred can occur again, only this time with a different species. While the big corporations can easily move on to new profits, there is always a terrible price paid by all the people who depended on the resources for their livelihood and find them exhausted.
It might be contended that it is possible to keep moving on—that is, to shift to a new species once one species is eliminated. This is, of course, possible—but there a finite limit to how often this can be done. It is also worth pointing out that human activity often impacts many species at once, which will also reduce the ability to switch species. We do not, after all, have a tuna 2.0 swimming the seas, waiting to replace the tuna.
It might be contended that a solution will be found that does not require sustainable fishing—people like to point to past forecasts of doom that did not come true because of some innovation or invention. While human ingenuity is impressive, to assume we will be able to solve the problem would be wishful thinking. Naturally, if there is a plausible solution being proposed, that would be another matter.
In addition to ignoring scientific data, there is also the tactic of “massaging” science. A common method is to appeal to uncertainty. The idea is that uncertainty in the data warrants sticking with the status quo. In the case of tuna, it has been claimed there is uncertainty about the stock assessments in terms of numbers and the impact of human activity. This uncertainty is then exploited to warrant expanding or at least maintaining quotas. The reasoning seems to be this: since the exact numbers and effects are not known with certainty, the new limits suggested by scientists are not warranted—so keep the old ones or set them higher. This same approach is taken with the environment in general, as has been the case with climate change. A general pattern is also to deny that humans are the cause and attributing it to other causes—and claiming that there is nothing we can do other than staying the course.
In an interesting parallel with fossil fuels, biologists who are funded by the tuna industry have claimed there might be as-of-yet undiscovered tuna spawning grounds so the fishing can continue at the current rate (or increase). While this is possible, there seems to be no evidence for undiscovered spawning grounds that can compensate for overfishing known spawning grounds. However, this sort of wishful thinking allows business to operate on false hope unsupported by facts.
Given the world population, effective management of resources is critical not only for the profits of the few, but the survival of the many. As such, we should do more to ensure a sustainable harvest of tuna. After all, future generations will need that brain food and mercury to produce more philosophers.

“The amazing, the unforgivable thing was that all his life he had watched the march of ruined men into the oblivion of poverty and disgrace—and blamed them.”