China's southernmost prefecture-level city, an archipelago city in the South China Sea encompassing the Xisha, Nansha, and Zhongsha Islands with stunning coral reefs and turquoise waters.
Sansha is unlike any other city in China. Established in 2012 as the country's southernmost prefecture-level city, it encompasses the Xisha, Nansha, and Zhongsha Islands — a vast maritime region in the South China Sea. The main settlement is Yongxing Island in the Xisha chain, a small but modern community with government buildings, a hospital, schools, and a small population of researchers, support staff, and fishing communities.
The Xisha Islands are the most accessible part of Sansha for travelers. They consist of about 30 islands, sandbars, and reefs spread across turquoise waters that rival the Maldives in color and clarity. Because access is tightly controlled — primarily through organized cruises departing from Sanya — the islands remain remarkably pristine. The coral reefs surrounding the Xisha chain are among the healthiest in the South China Sea, hosting an extraordinary diversity of marine life.
Visiting Sansha is an expedition rather than a casual trip. Cruise ships from Sanya make the 12-15 hour journey to the Xisha Islands, where passengers spend several days island-hopping, snorkeling, and enjoying the remote tropical paradise. The experience offers a rare glimpse into China's southern reaches — a place where marine science, fishing traditions, and untouched natural beauty converge.
The islands that make up Sansha have a long history of maritime activity. Chinese fishermen from Hainan have been navigating to the Xisha and Nansha Islands for centuries, using them as seasonal bases for fishing and turtle harvesting. Historical records from as early as the Han Dynasty (206 BCE-220 CE) mention these islands in Chinese navigational logs.
In the 20th century, the islands gained increasing attention. After World War II, the Chinese government reclaimed the Xisha and Nansha Islands from Japanese occupation. A presence was established on Yongxing Island in the 1950s, and the island gradually developed into a logistics and supply station.
The most transformative event came in 2012 when the State Council approved the establishment of Sansha City. Since then, Yongxing Island has seen significant development — an airport, harbor facilities, desalination plants, solar power installations, and research stations have transformed the settlement into a modern community.
Sansha's economy is small and specialized, centered on fisheries, marine scientific research, and eco-tourism. The fishing industry has traditionally been the mainstay, with fishermen from Hainan operating in the rich fishing grounds of the South China Sea targeting tuna, mackerel, grouper, and various shellfish.
Eco-tourism is the most visible economic activity. Since the launch of Xisha cruise routes from Sanya in 2013, tens of thousands of domestic tourists have visited the islands annually. The cruises operate under strict environmental regulations to protect the fragile coral reef ecosystems. Tourism revenue supports local services and infrastructure maintenance on Yongxing Island.
Marine research is a growing sector. Several research stations on the islands conduct studies on coral reef ecology, marine biology, climate change, and oceanography. The Sansha Marine Ecosystem National Observation and Research Station plays a key role in monitoring the health of the South China Sea marine environment.
Discover the culinary treasures of Sansha, from traditional street food to imperial cuisine.
Yongxing Island Airport (XYI) — an airport on Yongxing Island with limited commercial flights. Most visitors arrive via cruise ships from Sanya.
No metro system. Transportation between islands is by boat or helicopter.
Mar - May
Pleasant weather with calm seas and good visibility underwater. Ideal for snorkeling and island exploration.
Jun - Aug
Hot and humid with frequent typhoons. Cruise operations may be affected by weather. Lowest tourism season.
Sep - Nov
Transition season with improving conditions. October onwards sees reduced typhoon risk and clearer skies.
Dec - Feb
The best season to visit. Cooler temperatures, minimal rainfall, and the calmest seas of the year. Peak cruise season.
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