The municipality of Sitankai is a 1st class Municipality lies at the southernmost tip of the Philippines. It is located approximately between geographical coordinates, latitude North at 4’29 to 4’59 and 119’00 to 119’25 Longitude East. It is few hours away by motorized kumpits or pumpboats from Sabah, East of Malaysia or about 17 nautical miles and about 37 nautical miles from Capital town of Bongao. It is bounded by Sibutu Island to the East, to the South by Celebes Sea and South-West bounded by Sabah, Malaysia.

Sitangkai is composed of 13 islands occupying 9 barangays distributed in the island of Tumindao, Sipangkot and and Sitangkai Dikih. It is characterized by extensive reefs and endowed with rich marine resources. Of the 13 islands, Sitangkai Sitangkai has a total Municipal land area of 72, 430 hectares where 5,970 are landmass suitable for agricultural development while 66,460 hectares are foreshore Suitable for seaweeds farming and other marine products gatherers and culturist as certified by DAF, National Census, and DTI.

Sitangkai is recognized as “seaweeds Capital of the Philippines” as well as the “Cottoni Seaweeds Capital of the World”. Sitangkai is composed of 13 islands and islets Tumindao is the largest with the total area 3,430 hectares or equivalent to 57.45% of the total Sitangkai land mass area. It is followed by Umapoy with 9.2%, then Sipangkot as the third largest with 5.1%. The last islands to the South (Maldanas, Malmanok and Saluag) are the lowest islands having only an area of 0.1% respective

It is reached by commercial sea vessel from Bongao daily in more or less 4 hours. Motor launches leave from the different barangays of Sitangkai at 9:00 o’clock in the morning and go back home the following day except for Barangay Polacion, Panlima Alari, Imam Sapii and Datu Baguinda Puti. The said trip can be reached in 50 minutes by fast craft like speed boats.