The bay of Nha Trang is located in the province of Khanh Hoa, southern maritime area of Central Vietnam. Nha Trang city is the political, economic, cultural center of this province ; it's build in the estuary of Cai river and is surounded by 4 montains ("Long Son" = dragon, "Sinh Trung"= éléphant, "Trai Thuy = tortue, "Hoa Son" = chauve souris).
With a surface of 507 km2, the bay extends between Cay Cape (north) and Dong Ba Cape (south) ; the coastline (103 km) includes two distinct parts : continentale and islander, thus contributing to a great biodiversity but also to the development of the maritime activities: tourism, aquaculture and product processing, transportation, ...the main problem concerns : environmental pollution, illegal exploitation of mineral and forest resources ; fast urbanization.