From Inland Seas Worth Seeing:

“The waters of the Dead Sea are over 8 times as salty as ocean water, though the “salt” in the seas are 97 percent sodium chloride… only 30.4 percent of the Dead Sea’s salts are NaCl with the rest being potassium chloride, calcium chloride, magnesium chloride and various bromides.

With an average salt concentration of 33.7 percent, the Dead Sea is unusually dense and thus allows people to float much easier due to the property of natural buoyancy. “

Dead Sea, Israel/Jordan

Photo by Steffen