Oysters have a competitive advantage and dominate other molluscan species with respect to global distribution and aquaculture production. At present, the Pacific oyster has become one of the most important edible oysters in world aquaculture. Recently, with research advancements in oyster farming technology, non-native species invasion, environmental monitoring and disease control, new findings and outcomes have emerged. This book presents the latest research development in oyster reproduction, physiological response to pollution, ecological distribution and management, mass mortality, disease control, and other technical advance in oyster research.