Limnetic Zone: This term refers to the open water area beyond the littoral zone, where sunlight penetrates but plants cannot grow due to its depth.
Profundal Zone: The profundal zone is located below both the littoral and limnetic zones. It is deeper and receives no sunlight, making it dark and devoid of plant life.
Benthic Zone:The benthic zone is at the very bottom of a body of water. It includes both sediment and organisms that live on or in it.