Traditional sampan boat moving on Naf River near the coast of Bay of Bengal

trawler boat fishing river forest naf river mangrove sky blue turquoise tree sampan wooden sea water floating waves horizon bay bay of bengal coastline way of saint martin island navigation nautical sail vessel transportation seascape tropical marine nature travel traditional bangladesh travel destinations eco tourism indian ocean coxs bazarteknaf peninsula chera dwip narikel jinjira daruchini dwip myanmar burma motorboat small launch foamy ship aquatic commercial