Davao Gulf is a gulf found in Mindanao in the Philippines. Headlands and bays are two related features of the coastal environment Mindanao is the second largest and easternmost Island in the Philippines. The Philippines ( Filipino: Pilipinas, officially known as the Republic of the Philippines (fil ''Republika ng Pilipinas'' RP Davao Gulf cuts into the island of Mindanao from Celebes Sea. The Celebes Sea (or the Sulawesi Sea (Laut Sulawesi of the western Pacific Ocean is bordered on the north by the Sulu Archipelago and Sulu Sea It is surrounded by all four provinces in the Davao Region. The provinces of the Philippines are the primary administrative divisions of the Philippines. Davao Region, designated as Region XI, is one of the regions of the Philippines, located on the southeastern portion of Mindanao. The largest island in the gulf is Samal Island. The Island Garden City of Samal is a 2nd class city in the province of Davao del Norte, Philippines. Davao City, on the gulf's west coast, is the largest and busiest port on the gulf. The City of Davao ( Tagalog: Lungsod ng Dabaw; Cebuano: Dakbayan sa Dabaw) is the largest city on the island of The bagobos, a tribe known in Davao, are living in the Davao Gulf. With the thrust of Davao City towards Information Technology and IT-Enabled Services (ITES), Davao City and the Davao Gulf area have also earned the monicker Silicon Gulf. Information technology ( IT) as defined by the Information Technology Association of America (ITAA is "the study design development implementation support Business process outsourcing ( BPO) contains the transmission of processes along with the associated operational activities and responsibilities to a third party with at least Silicon Gulf is a Nickname for Davao City and extends to the Davao Region, at Southern Mindanao Philippines.