(klÅt) n. 1. A thick, viscous, or coagulated mass or lump, as of blood. 2. A clump, mass, or lump, as of clay. 3. A compact group: a clot of trucks blocking the tunnel's entrance.
Bodies start to float once the gas from decomposition replaced the  water inside the lungs. It is effected by the depth and temperature  or the water. In warm water it can bâ¦e as soon as 1 to 2 days in 80  degree water, or as much as 14 to 20 days in freezing cold water.
In brief: Usually months. Floaters are caused by condensations of vitreous that cast a shadow on your retina. They usually sink out of the visual axis over the course of 6 months or so. In addition, you brain learns to ignore them. In my personal experience, they have persisted for years, but i only notice them about once a month.