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The Moro Gulf is a sea in Mindanao in the Philippines. It is part of Celebes Sea and is surrounded by the Zamboanga Peninsula and the central part of Mindanao. Sibuguey Bay and Illana Bay are its major branches. 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 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.
Coordinates: 7°N 123°E / 7°N 123°E