why are body is floating on water after our death
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Swimming relies on the nearly neutral buoyancy of the human body. On average, the body has a relative density of 0.98 compared to water, which causes the body to float. However, buoyancy varies on the basis of body composition, lung inflation, and the salinity of the water.
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When the body is submerged then it does not necessarily mean that all the body parts are inflated at the same time. First, the torso part of the body which consists of most of the bacteria get bloated more than the head and the limbs. The process of buoyancy comes into play now. The parts of the body which are most buoyant rise first, leaving the head and the limbs to be dragged from behind the chest and the abdomen. Since the limbs and the head can only drape forward from the body, the corpses tend to rotate such that the torso floats face-down with the arms and legs hanging under it.
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