Cox's Bazar Beach, located at Cox's Bazar, Bangladesh, praised as the longest natural sea beach in the world running 150 kilometres (93 mi). However it is second longest after Ninety Mile Beach in Australia, though part of Australia's beach is man-made. It is the top tourist destination of Bangladesh.
At high tide the beach is 200 metres (660 ft) wide and at low tide it is 400 metres (1,300 ft) wide on average.
This Bay of Bengal beach is quite unknown to the international beach-loving crowd. But Cox’s Bazar is one of the most visited destinations in Bangladesh.
Along its 75 miles, different sections of Cox’s Bazar Beach have distinct names, usually referring to the flora and fauna in the area. Among the most popular sections are Laboni Beach, Humchari Beach, and Inani Beach, all doable on one-day trips from the town of Cox’s Bazar, where most accommodation is located.
Further south is Teknaf Beach. In general, the further south you go, the bluer the ocean, and the smaller the crowd. If you stay near Cox’s Bazar town, brace yourself for throngs of people. This can be frustrating if you were expecting a deserted tropical beach, but it can a great opportunity to get closer to the Bangladeshi notion of a beach holiday.
According to en.wikipedia