| Native Name: | 泗礁山岛 |
| Area Km2: | 21.2 |
The Sijiao Island is the largest island in the Shengsi Islands (Chinese: 嵊泗列岛) with an area of 21.2 km2. The island has a subtropical climate with the yearly average temperature of 15.8 °C. It is administrated by Shengsi County (Chinese: 嵊泗县), a part of Zhoushan Prefecture (Chinese: 舟山地区) of China.
There are regular ferry lines from Shanghai Wusong, Shiliupu and Luchao Ports operating several times a day.[1] The average travel time from Shanghai is about 5 hours. The island is a touristic destination offering sea bathing.