No one is claiming that orcas are dumb or that they shouldn't eat fish. But throughout nature when two species compete for the same resource there will inevitably be conflict. Europeans have been generally overfishing for centuries and will need to cut back catch quotas to a sustainable level. The Mediterranean once teemed with life, now it's rare to see any large fish.
Famines are generally caused by bad governance, not by lack of food. We should reduce food waste where practical but that won't really help to feed the starving. For example, the 1980's Ethiopian famine which triggered major international relief efforts was primarily caused by a civil war. The opposing sides used hunger as a weapon and stole food from civilians. I can eat less tuna but that won't solve such problems.
"A corporation within the £170bn Mitsubishi empire is importing thousands of tonnes of the fish from Europe into Tokyo's premium fish markets, despite stocks plummeting towards extinction in the Mediterranean.
Bluefin tuna frozen at -60C now could be sold in several years' time for astronomical sums if Atlantic bluefin becomes commercially extinct as forecast, a result of the near free-for-all enjoyed by the tuna fleet."
Famines are generally caused by bad governance, not by lack of food. We should reduce food waste where practical but that won't really help to feed the starving. For example, the 1980's Ethiopian famine which triggered major international relief efforts was primarily caused by a civil war. The opposing sides used hunger as a weapon and stole food from civilians. I can eat less tuna but that won't solve such problems.