Introduction Many studies have identified the importance of n-3 longchain polyunsaturated fatty acids LC-PUFAs , such as icosapentaenoic acid EPA, 20:5n-3 and docosahexaenoic acid DHA, 22:6n-3 , which provide health benefits 1. Recent studies have also proposed the beneficial health effects of docosapentaenoic acid n-3 DPA, 22:5n-3 , which is involved in platelet aggregation inhibition and endothelial cell migration 2. Searching for sources of these compounds is an area of active interest. Although DHA sources, such as tuna and krill oils, are already known throughout the world 3 , a high-quality source of other n-3 LC-PUFAs EPA and n-3 DPA has not been discovered. It is well established that many high-trophic-level marine animals accumulate LC-PUFAs 3, 4. Some commercially important bivalves Bivalvia , such as oysters and mussels, have been investigated in detail to determine their fat and lipid profiles oysters,