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
Bligh Reef Bligh Reef Bligh Reef, sometimes known as Bligh Island Reef, is a reef off the coast of Bligh Island in Prince William Sound, Alaska. This was the location of the 1989 "Exxon Valdez" oil spill. After the incident, US Code 33 § 2733 mandated the operation of an automated navigation light to prevent future collisions with the reef. Despite these efforts the tug "Pathfinder" ran aground on Bligh Reef on Dec 24, 2009, rupturing its tanks and spilling diesel fuel. Bligh Reef is also where Alaska Steamship Company's Olympia ran aground in 1910. Bligh Reef serves as a fishing ground