The designation "Dolphin Safe" on canned tuna has become a familiar one on every supermarket shelf, and it's essential to a tuna brand's success. But the "Dolphin Safe" fishing method that's most widely used today ends up killing far more other fish and sharks than the dolphins it saves. Is saving a relatively small number of dolphins (not a currently threatened species) worth the loss of more vulnerable aquatic species? And is tuna fishing itself sustainable, anyway?
David Shiffman, Masters in Marine Biology candidate at the College of Charleston in South Carolina and co-author of the marine biology blog SouthernFriedScience
Mark Palmer, Associate Director of the International Marine Mammal Project at the Earth Island Institute