Krill oil derives from a tiny, shrimp-like marine animal called a krill. It's rich in omega-3 fatty acids such as fish oil, eicosapentaenoic acid (EPA), and docosahexaenoic acid (DHA). It is said that the EPA and DHA in krill oil have a higher absorption rate than in fish oil because much of the EPA and DHA in the krill oil is bound by phospholipids. Krill oil is used for heart disease, high levels of certain blood fats (triglycerides), high cholesterol, high blood pressure, stroke, cancer, osteoarthritis, depression, premenstrual syndrome (PMS), and painful menstrual periods. Kori Krill Oil commits to quality and purity in that it is certified sustainably sourced from pristine Antarctic waters and has no added artificial ingredients.