Larger, carnivorous species like sharks and swordfish tend to accumulate the most toxins because they’re higher on the food chain and live longer. Mercury accumulates over time in the fish and ...

However, not every chain opts for the same catch when crafting your order. From McDonald's iconic Filet-O-Fish to the Popeyes Flounder Fish Sandwich, here are the kinds of fish that fast food ...

If they die, there’ll be fewer big fish—and that could rattle the food chain. marine-plastic-ocean-fish-microplasticThe naturally oily surface slicks in which many ocean fish come of age are ...