Do dead bodies float?

As others mentioned, dead bodies day 2-4 produce large amounts of gas literally inflating the body like a baloon, which can make it float. read more

In the sea/ocean, saltwater is actually more dense than freshwater, making it easier for things to float on them. Live bodies most certainly float on water, if they are fat enough. Fat is less dense than water. Fat people actually float quite easily. Ironic. Muscle is more dense than water, so muscular people sink in water. read more

Most dead bodies float this way, but there are exceptions. The smaller the limbs, the more likely a corpse will float facing up—short arms and legs create less drag. Also, if a body stays on the surface of the water for a long time it will release the built-up gas and sink once again. read more