Apo Reef Light of gallery. The light station on Apo Reef was part of the first approved group of lighthouses in the Maritime Lighting Plan of Spain for the Philippine Archipelago during the Spanish Colonial Period. It was proposed to erect a steel tower with a third-order light on Bajo Apo Island. In 1896, the tower and the lighting apparatus were already purchased complete by the Spanish authorities from France, and they were delivered and stored at the warehouse in Manila. All lighthouse constructions though, were halted with the outbreak of the Philippine Revolution and then the Spanish–American War. When the Americans took
Apo Reef two lagoon systems, the north and south lagoons which are bounded by narrow reef platforms. It is a almost triangular northern and southern atoll-like reefs separated by a deep channel that is open to the west. The channel runs east to west from deep with a fine white sand bottom, numerous mounds and patches of branching corals under the deep blue water. The north lagoon is an enclosed triangular coral reef platform partly exposed during low tide. It is relatively shallow with depths of about . While the south lagoon is an inverted triangular coral platform enclosed on two sides