Cutler Nutrition's Krill Oil contains the patented Antarctic sourced Superba2™ Superba Krill contains long chain omega-3 fatty acids, phospholipids, choline and astaxanthin which is extracted exclusively from Euphausia superba, an Antarctic krill species rich in the long chain omega-3 fatty acids EPA (eicosapentaenoic acid) and DHA (docosahexaenoic acid).