Moro Gulf

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The Moro Gulf is part of Celebes Sea, and the largest gulf in the Philippines. It is off the coast of Mindanao Island in the southern Philippines.


The gulf stretches between and is surrounded by the main section of Mindanao on the east, and the Zamboanga Peninsula of Mindanao on the west.

Sibuguey Bay and Illana Bay are its major bays.

Zamboanga City is the most important port city on its coast. Cotabato City, on the eastern coast, is another major port.


The Moro Gulf is also an area of significant tectonic activity with several fault zones in the region capable of producing major earthquakes and destructive local tsunamis, such as the devastating 1976 Moro Gulf Earthquake which killed over 5,000 people and left over 90,000 people homeless as it hit the west coast of Mindanao.

On July 23, 2010 at 22:08, a 7.3 magnitude earthquake with an epicenter of Moro Gulf hit Mindanao. This was quickly followed by two earthquakes of magnitudes 7.6 and 7.4.[1]

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Coordinates: 7°N 123°E / 7°N 123°E / 7; 123