Apo Reef Apo Reef Apo Reef is a coral reef system in the Philippines situated on the western waters of Occidental Mindoro province in the Mindoro Strait. Encompassing , it is by no means the world's second-largest contiguous coral reef system, but is the largest in the country. The reef and its surrounding waters are protected areas in the country administered as the Apo Reef Natural Park (ARNP). It is one of the best known and most popular dive sites in the country. It is listed in the tentative list for UNESCO World Heritage Sites. Apo Reef can be found around west
Tiparra Reef Tiparra Reef Tiparra Reef (also spell as Tipara) is a reef located in Spencer Gulf in South Australia about west of the town of Port Hughes. The reef is described as being "a bank of sand, in extent, with depths of less than , that lies in the middle of Tiparra Bay" with a"limestone ledge, long in a N[orth] S[outh] direction and about wide, that just dries, lies on the S[outh] W[est] end of the reef N[orth] W[est] of Cape Elizabeth" (which is the southern headland of Tiparra Bay). The limestone ledge was the site of an operational lighthouse from