Login or register
Anonymous comments allowed.
#14 - anon
Reply 0 123456789123345869
(06/30/2013) [-]
Okay first of all, human bodies has a natural tendency to be bouyant. It might seem counter-intuitive, because most people would agree that before they learned to swim (and even after) it's relatively hard to stay afloat. That would require a longer explanation but here is the main reason why a body floats:

A cadaver in the water starts to sink as soon as the air in its lungs is replaced with water. Once submerged, the body stays underwater until the bacteria in the gut and chest cavity produce enough gas methane, hydrogen sulfide, and carbon dioxide to float it to the surface like a balloon.