Lung Fact :)

Lungs are the only human organ that can float on water.

Every day, the average human breathes around 22,000 times and, according to the Lung Foundation of Australia, no matter how hard a person exhales, their lungs will still have about one liter of air lingering inside, which makes the organ buoyant enough to float on water. No other organ in the human body has the same ability.

(So, If you want to throw a body into the water, puncture the lungs first, that way, they don't float as much.)