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It depends entirely on the amount of salt in the water. Pure water has a density of 1 kg/L. Any item that is less dense than 1 kgL, will float. Items with a greater density will sink. As you increase the salinity of water, the density of the salt adds to the water's density. The Dead Sea, for example, has a high saline level (31%) and it's density is 1.24kg/L. An average sized person can easily float in these waters.

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16y ago

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