http://www.slate.com/articles/health_and_science/science/2015/07/sustainable_mcdonald_s_fish_pollock_trawlers_harm_native_alaskan_halibut.html

When you buy a McDonald’s Filet-O-Fish sandwich, you might notice the little blue label that tells you the fish you’re about to eat is certified as environmentally sustainable. That sounds like good news for the environment, for fish, and for customers. But what the label doesn’t tell you is that Native American communities in Western Alaska are endangered, in part because of the Seattle-based trawl boats that bring you products like McDonald’s famous fish sandwich.