|In plain water, our GI Joe sinks straight down when dropped in the water.|
|With half a cup of salt added to our water, GI Joe sinks, but much slower.|
|With 1 cup of salt added to our water, GI Joe will float, keeping his weapon above the water, mind you!|
Explanation: Salt water is denser, or heavier. Fewer water molecules are displaced, or forced out of position.