One Sensible Way to Get the Benefits of Omega-3s without Eating Fish* In a perfect world, you'd get all the omega-3s you need by eating fish. Unfortunately, studies clearly show that eating fish can potentially expose you to a high degree of contamination. This includes industrial pollutants and toxins like mercury, PCBs, heavy metals and radioactive poisons. Read the facts on a marine oil that tops my list for getting your essential omega-3 oils without the fishy aftertaste.