What are the longest and shortest beaches in the world?

The longest beach in the world is Praia do Cassino, Brazil. It stretches for almost 160 miles along the southern coast. It eventually reaches Uruguay. 160 miles is approximately 257 km

The shortest beach in the world is Playa de Gulpiyuri, in northern Spain. It is very small (about 40 m long) and does not directly border the ocean or a river. The small body of water is surrounded by sand on one side and tall cliffs on the opposite side. The water travels a short distance from the Cantabrian Sea to the beach via underground caves.