Tawi-Tawi is an island province of the Philippines located in the Autonomous Region in Muslim Mindanao (ARMM). The capitals of Tawi-Tawi are Bongao and Panglima Sugala. It is the southernmost province of the country, sharing sea borders with the Malaysian state of Sabah and the Indonesian North Kalimantan province, both on the island of Borneo to the west. To the northeast lies the province of Sulu. Tawi-Tawi also covers some islands in the Sulu Sea to the northwest, the Cagayan de Tawi-Tawi Island and the Turtle Islands, just away from Sabah.