Davao Gulf is a gulf found in Mindanao in the Philippines. It has an area of 308,000 hectares. Davao Gulf cuts into the island of Mindanao from Philippine Sea. It is surrounded by all five provinces in the Davao Region. The largest island in the gulf is Samal Island. Davao City, on the gulf's west coast, is the largest and busiest port on the gulf. The Bagobo, a tribe known in Davao, are living in the Davao Gulf.