Petley Reef
Petley Reef (Filipino: Bahura ng Juan Luna); Núi Thị Reef (Vietnamese: Đá Núi Thị); Mandarin Chinese: 舶兰礁; pinyin: Bólán jiāo, is a reef on the northern part of the Tizard Bank of the Spratly Islands in the South China Sea. The reef has been occupied by Vietnam since 1988. It is also claimed by China (PRC), the Philippines, and Taiwan.