Mar Menor is a coastal lake with salt water in the Iberian Peninsula, located southeast of Murcia, with an area of 135 square kilometers, and the length of the coast is 70 kilometers, and it is the largest lake in Spain. La Manga separates the lake from the Mediterranean Sea, which is a sandy strip Its length is 22 km, and there are five small islands within the lake, and it is an ideal place for swimming and practicing various water sports.