Sibutu Passage Coordinates: 4°50′N 119°35′E / 4.833°N 119.583°E / 4.833; 119.583 is a safe and deep channel some 18 miles (29 km) wide that separates Borneo from the Sulu Archipelago. It has a deep sill allowing entry of deep water into the Sulu basin while connecting the Sulu Sea with the Sulawesi Sea that feeds from the Pacific Ocean by the Mindanao Current.
At the last glacial maximum it was one of only two entrances to the Sulu Sea, along with Mindoro Strait, while the Sulu Islands and most of the other Philippine Islands were one connected island.
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