If there are sufficient gas producing bacteria present a dead prawn will float.
Usually a stuck float mechanism.
Bad float valve in carb
Bodies tend to begin to float when decomposition via bacteria produces methane gas, greatly increasing the buoyancy of the body. They initially sink due to relatively low buoyancy after the air has been expelled from the lungs. You can test the first part by going to a pool and exhaling all of the air in your lungs that you can. You will sink to the bottom of the pool rather quickly.
Helium has a low density and causes balloons and blimps to float
After death, the organisms/bacteria within the body will metabolise and multiply, producing lots of gas in the process. Most of this gas is unable to escape, so the body expand and float from all of the gasses present. The body will then sink again once it has decayed enough to allow the gasses to escape.
Could be,Foreign material (dirt, rust, etc) caught in the needle and seat,Bad float,Float is out of adjustment,
Dead body(s) will float in seawater [at least dead animal body(s) do]. ... visualize that once the body begins to decompose bacterial gases will cause the body to float to the surface ... imagine that body(s) which end up in deep water (thereby very cold water) do not experience bacterial decomposition as quickly and consequently with limited light and oxygen any bodies in deep/cold water decompose and are consumed more slowly without floating to the surface due to bacterial gas expansion common to warm water ...
The main way the Jews were killed is, they were taken into gas chambers and gas out. Once they were dead their bodies were burned.
To ensure everyone was dead and the Gas was gone so they could burn the bodies and bring the next lot of Jews
It is the amount of gas in your turd. Gas is lighter and therefore a turd with more gas will float.
Bodies sink when the lungs & stomach fill up with water. Once the stomach acids mix & begin to decompose it creates a gas that fills the stomach & lungs up like a balloon then the body will float to the surface.