Apo Reef Light Apo Reef Light The Apo Reef Light was a historic lighthouse built on Bajo Apo Island in Apo Reef Natural Park. The park is located in the middle of Mindoro Strait, west of the province of Occidental Mindoro, in the Philippines. The station was established to warn ships of the dangerous shallow reefs in that part of the strait. The original tower was the tallest lighthouse tower ever erected in the Philippines. The 118-ft (36.0-m) tall structure was an iron skeletal tower with a central cylinder, reinforced by a hexagonal frame and topped with the lantern room with two levels
Great Barrier Reef Great Barrier Reef The Great Barrier Reef is the world's largest coral reef system composed of over 2,900 individual reefs and 900 islands stretching for over over an area of approximately . The reef is located in the Coral Sea, off the coast of Queensland, Australia. The Great Barrier Reef can be seen from outer space and is the world's biggest single structure made by living organisms. This reef structure is composed of and built by billions of tiny organisms, known as coral polyps. It supports a wide diversity of life and was selected as a World Heritage Site in