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. The peninsula's major drainage goes towards the gulf.
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.
- Barut, Noel. "National Tuna Fishery Report - Philippines" (PDF). School of Ocean and Earth Science and Technology. Marine Fisheries Research Division National Fisheries Research and Development Institute. Retrieved 4 May 2015.
- Carating, Rodelio B. (2014). Soils of the Philippines: World soils book series. Springer Science & Business. p. 61. ISBN 9401786828. Retrieved 4 May 2015.
- "ZAMBOANGA PENINSULA". Department of Environment and Natural Resources. Retrieved 4 May 2015.
- "Magnitude 7.4 - MORO GULF, MINDANAO, PHILIPPINES". U.S. Geological Survey. Retrieved 4 May 2015.