||Set net fishing grounds along the coast of Taiwan are distinct in their terrain, water temperature, depth, salinity, and current. They form microhabitats, microenvironments,and a variety of fish species that support 60 set nets. Between these fishing grounds are migrating species and endemic species who have similar and contrasting diversities and distributions. However, these similarities and differences have not been comparatively studied. Furthermore, factors such as the expansion of coastal towns and villages,industrial developments, land pollutions, and global climatic changes are affecting the biological resource along the coasts. Therefore, the changes in the diversity of fish species and the catch amount of set nettings in Taiwan may be an indicator for the study of Taiwan and?associate coastal environment changes. Since biological resource is the foundation for ocean fishery, the monitoring and assessment of biological resource diversity and the capacity of ocean ecosystem are important scientific data needed in ocean management for reasonable utilization and effective conservation of fishery resources. This study thus aims to collect daily catch data from the Ilan, Hualien, Miaoli, Pingdong, and Taitung Country＆apos;s set net fishing ground and coordinate them with sample collections and analysis to compare and contrast the biological diversity of each set net fishing ground. Data from the satellite and on-site hydrological measures are also collected. Statistical analyses are used to explore the relationship between resource and environmental changes at different set net fishing grounds.