Tawi-Tawi is an island province of the Philippines located in the Autonomous Region in Muslim Mindanao (ARMM). The capital of Tawi-Tawi is Bongao. The province is the southernmost of the country sharing sea borders with the Malaysian State of Sabah and the Indonesian Kalimantan province. To the northeast lies the province of Sulu and to the west is Sabah in Malaysia. Tawi-Tawi also covers some islands in the Sulu Sea to the northwest, the Cagayan de Tawi-Tawi Island and the Turtle Islands, just 20 kilometers away from Sabah.