Sikai Wang specializes in ecological restoration, aquatic food webs, and the monitoring and assessment of estuarine and offshore fishery resources. His research primarily focuses on the Yangtze Estuary, where he has been extensively involved in long - term fishery resource surveys and ecological restoration initiatives. One of the crucial research directions is the investigation of the migration patterns and resource status of the larvae of key species in the Yangtze Estuary, such as Japanese eel fry, Chinese mitten crabs, and Chinese sturgeons. Through the tracking of their migration routes and the identification of their habitat requirements, he has provided essential data for comprehending their survival mechanisms. These species play a vital role in maintaining ecological equilibrium and ensuring the sustainability of fisheries. By studying the migration distribution and habitat needs of important fishery species, corresponding habitat ecological restoration efforts have been promoted. After persistent endeavors, a comprehensive technical system for estuarine habitat restoration has been established.