What is a thermocline?

A thermocline is defined as the interface between two layers of water that have distinct temperatures, typically found in bodies of water like oceans and lakes. This zone is characterized by a rapid decrease in temperature with increasing depth, which creates a clear boundary between the warmer surface waters and the colder depths beneath.

In many aquatic environments, the thermocline plays a significant role in influencing water circulation, aquatic life distribution, and the overall ecology of the area. The presence of a thermocline can affect the availability of nutrients and oxygen at different depths, impacting various species and their behaviors. Understanding the thermocline is essential for scientific divers as it informs their dive planning, safety protocols, and research activities, especially when working in diverse temperature gradients.