Before revision: Typically stratified lakes show three distinct layers, the Epilimnion comprising the top warm layer, the thermocline (or Metalimnion ): the middle layer, which may change depth throughout the day, and the colder Hypolimnion extending to the floor of the lake.
After revision: Typically stratified lakes show three distinct layers, the epilimnion comprising the top warm layer, the thermocline (or metalimnion ): the middle layer, which may change depth throughout the day, and the colder hypolimnion extending to the floor of the lake.