Q: Which one is the longest sea beach in the world?  

Cox's Bazar is a town, a fishing port and district headquarters in Bangladesh. The beach in Cox's Bazar is an unbroken 120 km (75 mi) sandy sea beach with a gentle slope, is the world's longest. It is located 150 km (93 mi) south of the industrial port Chittagong. Cox's Bazar is also known by the name Panowa, whose literal translation means "yellow flower." Its other old name was "Palongkee".

Extending to reach around 150 miles in length, the longest broken beach in the world is the Praia do Cassino Beach in Brazil. This is longer than the entire coastline of New York State (127 miles) or New Jersey State (130 miles). Length aside, this beautiful beach is known for its white sand, welcoming locals, and warm temperatures as well. Although the temperature here remains on the border of hot for most of the year, there are plenty of water activities that beach-goers can enjoy to help them cool off. Of these, surfing happens to be the most popular of them all. For a better perspective of its size, consider the fact that this beach is so long, it stretches all the way from the Rio Grande seaport to the mouth of the Chui stream adjacent to Uruguay.