The "mixed layer" refers to the upper layer of the ocean where water is well-mixed due to wind and wave action. This layer typically extends from the surface down to about 50 to 200 meters, depending on factors like location and season. The mixing helps distribute heat, nutrients, and gases, making it crucial for marine life. In addition to oceans, the term "mixed layer" can also apply to the atmosphere, where it describes the layer of air that is mixed by turbulence. This atmospheric mixed layer influences weather patterns and temperature variations, impacting climate and environmental conditions.