The Dead Sea is almost 10 times as salty as the ocean, and with 33.7% salt concentration, it's one of the world's saltiest water bodies. In Hebrew, it is called "Yam ha-Melab "meaning "sea of salt" (Genesis 14:3), and because of its high salinity, aquatic organisms like fish and plants cannot flourish in it; hence its name - the Dead Sea. The sea water has a density of 1.240 kg/L, which makes swimming in it similar to floating. At 50 kilometres long and 15 kilometres wide, it borders Jordan to the east, Israel and Palestine to the west. Although sparsely-populated and serene now, the area is believed to have been home to five Biblical cities: Sodom, Gomorrah, Adman, Zebouin and Zoar (Genesis 14:2). Its surface and shores are 427 metres (1,401 ft) below sea level, making it earth's lowest elevation on land. And with a depth of 306 m (1,004 ft), it is the deepest hypersaline lake in the world.