Dead Sea salt refers to salt extracted or taken from the Dead Sea. The Dead Sea is popular with tourists from all over the world for its reputed therapeutic effects. The water of the Dead Sea has a salt content of 29%, compared to 4% in the oceans, and is consequently substantially denser. This allows anyone to easily float on Dead Sea water because of its greater density. Its mineral composition is also different from ocean water since only 12–18% of Dead Sea salt is sodium chloride. A 2006 analysis of a commercial Dead Sea Salt product measured a 2.5% sodium chloride content; by comparison, 85% of the salt in normal ocean water is sodium chloride.