The Olango Island Group is a group of islands found in the Central Visayas region of the Philippines. It is composed of Olango Island and 6 satellite islets namely: Sulpa, Gilutongan, Nalusuan, Caohagan, Pangan-an, and Camungi. Olango Island and its neighboring islets has a total land area of approximately 10.3 square kilometres (4.0 sq mi). The island group is under the jurisdiction of the City of Lapu-Lapu and the Municipality of Cordova. The island group is a part of Cebu Province. It lies 5 km east of Mactan Island and a major tourist destination in Cebu. It is known for its wildlife sanctuary
Land areaOlango Island and its neighboring islets has a total land area of approximately 10.3 km² (1,030 hectares). The reef flat-lagoon surrounding the island of Olango is considered one of the most extensive reef areas in the Central Visayas. A total of 4,482 hectares of extensive sandy beach, rocky shoreline, inshore flats, seagrass beds, coral reefs, mangrove forest, mudflats, and salt marsh grass surround Olango and its satellite islets.
TopographyThe Olango group of islands is an island group composed of the island of Olango and six satellite islets. The six neighboring islets namely: Sulpa, Gilutongan, Nalusuan, Caohagan, Pangan-an, and Camungi are bounded by continuous fringing reefs (steep reef wall on the west and sloping reef at the east coast of Olango) and reef flats. The islands are low-lying with elevation reaching no more than 10 meters above sea level. At the center of these islands is a vast tidal flat, which includes the 920-hectare area of the Olango Island Wildlife Sanctuary.
GeologyOlango Island and its satellite islets are raised coral reefs. The lithology of the island consists of 2 unit types: the Plio-Pleistocene Carcar Formation and the Quaternary Alluvium (the youngest lithologic unit). Carcar formation is typically a porous coralline limestone characterized by small sinkholes, pitted grooves, and branching pinnacles. This suggests in situ deposition. Its dominant composition are shell, algae, and other carbonate materials, while macro and micro fossils are found abundant in its formation. Alluvium, on the other hand, is mostly found in the coastal areas. Calcareous sand derived from the weathering of limestone mostly makes up the tidal flat. This appears as fine to coarse-grained sand mixed with shell fragments.
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The Olango Island Wildlife Sanctuary is a sanctuary for migratory birds and other marine species in the Olango Island Group located about five kilometers east of Mactan Island, Cebu. The group of islands consists of Olango Island and six other islets namely Sulpa, Gilutongan, Nalusuan, Caohagan, Pangan-an, and Camungi.
The island group is a diverse coastal ecosystem consisting of extensive coralline sand flats, mangroves, sea-grass beds, and offshore coral reefs. The mangroves of Olango Island are the most extensive in the province of Cebu and its offshore corals are home to various kinds of marine species. The island group is surrounded by warm seas and partly sheltered from monsoons and strong trade winds.
The Olango Island Wildlife Sanctuary has become a major tourist attraction as it is one of the seven best-known flyways in the world for migratory birds. The 920-hectare sanctuary is a haven for birds migrating from Siberia, Northern China, Japan, and other parts of northern Asia during the winter months.
Please read further at the below web link :
Bird's sanctuary at Olango Island
View from the sea - Olango islands
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