Algae Omega-3 has been rising in popularity in the past decade. Unlike fish based Omega-3, algae Omega-3 is vegetarian, vegan, sustainable, contains natural DHA and EPA, and has minimal risk of ocean borne contaminants. There are 3 main sources of omega-3 fatty acids: Eicosapentaenoic acid (EPA), Docosahexaenoic acid (DHA) and Alpha-Linolenic Acid (ALA.)