Wild Trout forever
Since we don't typically harvest Orca's for food why shouldn't we try to control their harvest of salmon, which we do typically harvest for food? Maybe killer dolphins are predators of the fish we spend millions of money on so we can harvest them for ourselves? Maybe some marine mammals need to be controlled. Maybe we could convince them they'd do better for themselves if they stayed out of Puget Sound or any other sound around. Maybe we could teach them to eat pinnepeds instead of salmon or maybe we could cull the salmon eaters and let the pinneped eaters survive.
Humans are not dying out from lack of salmon, resident Orca are. Humans need to give up eating salmon. Pretty easy solution? Farm them in big swimming pools on land, who cares, leave the wild ones alone.
Did you not read anything I posted above? ..they do not switch over after eons of feeding on salmon, the resident Orca population.