St. Martins Island is a small island in the northeast part of the Bay of Bengal , about 9 km south of the tip of the Cox's Bazar-Teknaf peninsula, and forming the southernmost part of Bangladesh . It is the only coral island in Bangladesh . It is about 8 km west of the northwest coast of Myanmar at the mouth of the Naf River . The local name of the island is “Narical Gingira”, also spelled “Narikel Janjina/Jinjera”, translated from Bangla, meaning ‘ Coconut Island '.
St. Martin 's Island has become a popular tourist spot. Currently, three shipping liners run daily trips to the island, including Sea-Truck and Keary-Sindbad. Tourists can book their trip either from Chittagong or from Cox's Bazar. The surrounding coral reef of the island has an extension named Chera Dwip.