This is the municipality of Sitangkai, in the province of Tawi-Tawi. Its population as determined by the 2015 Census was 2,194. This represented 6.58% of the total population of Sitangkai.

Tongmageng is situated at approximately 4.7092, 119.4069. Elevation at these coordinates is estimated at 9.7 meters or 31.8 feet above mean sea level.

Hindi ito baha. Kuha ang mga larawan ngayong gabi sa tinaguriang Venice of the South. Masayang naliligo ang mga kabataan sa itinuturing na main street sa Barangay Baguindah, Sitangkai, Tawi-Tawi. Malinis at malamig ang tubig na sinabayan pa ng high tide. | Courtesy: Nurwin Solis