Sunset at Saint Martin????s Island at Teknaf in Cox????s Bazar. It is the only coral island of Bangladesh and one of the famous tourist destinations of the country. St Martin's Island a small island in the northeast of the Bay of Bengal, about 9 km south of the Cox's Bazar-Teknaf peninsular tip and forming the southernmost part of Bangladesh. The local people call it Narikel Jinjira. Teknaf, Cox????s Bazar, Bangladesh, December 24, 2006.