If you were stranded on the ocean in a raft, what would happen if you kept drinking ocean water?
your blood would become hypotonic
your blood would become hypertonic
the concentration of water in your blood would increase
the concentration of water in your blood would decrease
water would flow out of your body cells
the excess water would flow into your cells

The correct answer is that water will flow out of the cells of the body.  

When one consumes salt water, the concentration of solutes external to the cells will enhance making the water inside the cell to move out of the cells, thus, making the cells shrink. Outside the cell, the solution is hypertonic and may result in dehydration.  

The kidneys in human can only produce urine, which is less salty in comparison to salt water. Thus, to withdraw all the extra salt consumed, one has to urinate more water than one has drunk. Hence, resulting in dehydration.