Olympian Lab's Enteric Coated Omega-3 Fish Oils' unique coating withstands stomach acids and breaks down in the duodenum (upper portion of small intestine) and maximizes the body's absorption of Omega-3 essential fatty acids. Olympian Labs' Enteric Coated Omega-3 Fish Oils are obtained from fish found in cold, deep water. These fish provide more of the Omega-3 factors (fatty acids) than other fish.