Boundary Island is a beautiful small island in Lingshui County, Hainan, China, located just off the south-east coast of Hainan, between Lingshui and Wanning, in Riyue Bay.

The island offers many exciting sports and activities including scuba diving, yachting, sailing, swimming, hiking, volleyball, parasailing, a sightseeing submarine, and much, much more.

There is a resort located on the island as well, where you can stay in a wooden cabin on the forested hillside, with breathtaking views of the island's coast and crystal clear blue water.

Ranking: 5A

Ticket Price: 165 RMB (includes ferry boat passage to and from the island)

Phone: +86 898 31817777 / 31817733

Location: Boundary Island, Haikou - Sanya East Highway Niuling Exit, Lingshui 海口--三亚东线高速公路牛岭出口处

Transportation: Take the Lingshui Bus from the Sanya City Bus Station, then take the free shuttle bus to Boundary Island from the Lingshui Yijing Bay Hotel (陵水怡景湾酒店).

Official Website: http://www.hnfjz.com/index-en.html