Fenjiezhou Island (Boundary Island)

It gets its name from Niuling Mountain, the geographical dividing line between the warm and temperate zones of Hainan Island, often praised as the "Jelly Sea Paradise". Compared with crowded Wuzhizhou Island, it features quieter environment, layered crystal-clear turquoise seawater, distinctive cliff coastline and romantic European-style Moonlight Ancient Castle, a top spot for wedding photography and Instagram-style shots. Core highlights include the Marine Theater with sea lion performances, stingray interactive feeding experience, Dadao Cave viewing platform, Cliff Infinity Pool, Juedu Valley and circular coastal hiking trails. It is also a professional diving base with rich coral reefs, offering snorkeling, deep diving, submarine sightseeing and various water activities. It perfectly fits family parent-child trips, couple romantic vacations and underwater adventure tours, and can be combined with Nanshan Cultural Zone and Yalong Bay for a Hainan coastal in-depth itinerary.