Quicksand is a type of sand that is so saturated with water that it can no longer support the weight of a person or object. It is often found in areas where there is a high water table or where underground streams or springs are present. Quicksand can occur anywhere that there is loose sand and water, so it can be found all over the world.

The composition of quicksand is primarily sand, but it also contains a significant amount of water. The water causes the sand particles to become coated and separated, making it difficult for them to support weight. The consistency of quicksand can vary, ranging from a thin slurry to a thick, heavy mixture.

Recent studies have provided more information about the composition and behavior of quicksand. For example, research has shown that the viscosity of quicksand is affected by the size and shape of the sand particles, the amount of water present, and the presence of other substances, such as clay or silt. Additionally, scientists have found that quicksand can exhibit some non-Newtonian fluid properties, meaning it can behave differently under different conditions of stress and strain.