OP, are you with Greenpeace or PETA? Those organizations, though they don't broadcast it, believe wholeheartedly that mankind is a blight on the earth, and the disease that will kill it. The life of a dolphin is worth much more (exponentially) than a human life to these extremists.
It's an imperfect world, filled with imperfect people -- there will be some degradation. Deal with it.