Much of the research and attention on fish oils has focused on the omega-3 fatty acids eicosapentaenoic acid (EPA, C20:5n3) and docosahexaenoic acid (DHA, C22:6n3), but a burgeoning body of new science is now indicating that the third most prevalent very long-chain omega 3 fatty acid in fish oil, docosapentaenoic acid (DPA, C22:5n3), is also critical to human health. It definitely possesses some unique benefits.