Apo Reef of the nearest coast of the Philippine island of Mindoro. It is separated from main island by the Apo East Pass of the Mindoro Strait. Politically, the reef lies within the jurisdiction of the Province of Occidental Mindoro in Region IV-B of the Philippines and more accurately of the Municipality of Sablayan. Tourism activities are administered by local government of Sablayan and the local office of the Department of Environment and Natural Resources (DENR). Apo Reef is roughly a triangular coral atoll formation approximately from the north to the south tip, and from east to west. It is separated by
Port Noarlunga Reef Aquatic Reserve full extent of the Onkaparinga River from its mouth to the bridge on the South Road in the suburbs of Noarlunga Downs and Seaford Meadows. The portion of the aquatic reserve located within Gulf St Vincent includes two reef systems that are exposed at low tide - the Horseshoe Reef located off the coast at Christies Beach and the Port Noarlunga Reef located off the coast at Port Noarlunga. The Port Noarlunga Reef is connected to the shore by a jetty. The aquatic reserve was declared on 30 November 1971 to protect “reef organisms from exploitation and for the conservation