Fisheries analysts at the U.N. Food and Agricultural Organization report that 70 percent of the world’s fisheries are fully or overly exploited, depleted or in a state of collapse. Fish like bluefin tuna and Atlantic salmon are severely overfished, and environmental groups are working to get them endangered species status. The overfishing of a particular species doesn’t damage that population alone — it can have serious effects further up the food chain and decrease biodiversity. Check out the Environmental Defense Fund’s seafood eco-ratings to determine what fish is safe for both you and our oceans.