This is about Blue Fin, which are the prime sushi tuna. Blue fin is not in tuna cans. 60 minutes did a story this year on the modern way Blue fin are harvested, using spotting planes and ship envoys encircling large groups. The modern techniques have caused the numbers to drop dramatically. If we're going to lose the Blue Fin for consumption in three years, we might as well lose it now for consumption and hope that in it's artificial absence from our plates it will recuperate. If not, I've lost hope in humanity. Why kill off a species for just three more years of use?