Dead sea has a high concentration of dissolved salt. As a result of this, water is dense because of this concentration. Our body feels lighter ( as it is less dense ) and floats on the Dead Sea.
Because the Dead Sea is so salty, its water has a high density (mass/volume). People find it very easy to float when swimming in the Dead Sea. In this activity you will vary the salinity of water to make beads of various densities float. Specific Gravity is the density of a substance compared to the density of water.