Our new Super DHA 500 omega-3 supplement features Calamarine Marine Oil: the next generation, eco-friendly and sustainable omega-3 supplement that naturally offers more DHA than any other marine source. Omega-3 science is rather complex, but most interested individuals recognize the big players, EPA and DHA, present in marine oils. And while most fish oils provide more EPA than DHA, the evidence now shows that DHA is actually the body's preferred omega-3. Because omega-3 fatty acids cannot be synthesized in the body, their importance in the diet cannot be overlooked. Calamari or squid oil, the raw source of Calamarine, is unique among marine oils in that its DHA content can reach 50% by weight. Calamarine, the highly-purified, refined calamari oil in our new Super DHA 500 is the only marine oil that naturally delivers this preferred source of omega-3 in high concentration.