Dead Sea 342 parts per thousand (in 2002), and a temperature that swung between and . Underneath a zone of transition, the lowest level of the Dead Sea had waters of a consistent temperature and complete saturation of sodium chloride (NaCl). Since the water near the bottom is saturated, the salt precipitates out of solution onto the sea floor. Beginning in the 1960s, water inflow to the Dead Sea from the Jordan River was reduced as a result of large-scale irrigation and generally low rainfall. By 1975, the upper water layer was saltier than the lower layer. Nevertheless, the upper layer remained
World Discoveries III: Dead Sea World Discoveries III: Dead Sea World Discoveries III: Dead Sea is a 1999 documentary that takes an in-depth look at the Dead Sea, which is a lake on the border between Israel and Jordan. At 8.6 times saltier than the ocean, the Dead Sea is so salty fish can't swim in it, boats can't sail on it, and animals can't survive around it. The film explores the ominous reputation the salty body of water has acquired and shows slow wide-screen nature shots of its surroundings. "World Discoveries III - Dead Sea" travels around the Dead Sea to explore its history