Whiting event clouds consist of calcium carbonate polymorphs; aragonite tends to be the dominant precipitate, but some studies in oligotrophic and mesotrophic lakes show calcite is favored.[1][7] Whiting events have been observed in tropical and temperate waters, and they can potentially cover hundreds of meters.[3] They tend to occur more often in summer months, as warmer waters promote calcium carbonate precipitation, and in hard waters.[3][10] Whitings are typically characterized by cloudy, white patches of water, but they can also be tanner in hue in very shallow waters (less than 5m deep).[4] These shallow water whiting events also tend to last less than a day in comparison to deeper water events that can last for several days up to several months.[2] Regardless of the event's lifespan, the clouds it produces increase turbidity and hamper light penetration.[10]