Saint Martin's is the most beautiful and only coral island in Bangladesh and one of the best Eco-Tourism Destinations among the others. It is called the marine paradise of Bangladesh, located in the northeast part of the Bay of Bengal, just about 9 km south of the Cox's Bazar-Teknaf peninsula and 8 km west of the northwest coast of Myanmar. The island forms at the southernmost part of Bangladesh and at the estuary of the Naf River that divided Bangladesh and Myanmar marking as the international borderline between the two countries. The island is locally called as “Narikel Jinjira” that means Coconut Island when a lot of coconut grows in this island. Someone called it “Daruchini Dip” due to its lovely landscape and illusive crystal blue water of the Bay of Bengal that surrounding the island. The location of Saint Martin's Island is on the getaway in Bangladesh. The surrounding coral reef of the island has an extension named “Chera Dwip”.