Why does a dead body float in water?

Floating body on water

There are many bacteria in our body area (meat intestines) in our body. When a whole body goes inside the water or dies inside the water then our lungs which are initially filled with air, are filled with water. Along with this, the bacteria that were first made about earlier were starting to produce various gases, for example "methane gas, carbon dioxide". Due to this kind of gases produced, our body density is decreasing and our bodies are starting to work like billions filled with gases and as we know, if the density of the water is high then any body on the body Floating starts. This is the reason for the floating body found in water.