Stratification (water) 

Aquatic layers
Pelagic
   Photic
      Epipelagic
   Aphotic
      Mesopelagic
      Bathyalpelagic
      Abyssalpelagic
      Hadalpelagic
Demersal
Benthic
Stratification
Pycnocline
   Isopycnal
   Thermocline
   Halocline
   Thermohaline
   Chemocline
Lake stratification
Ocean habitats
Aquatic ecology

Water stratification occurs when water of high and low salinity (halocline), as well as cold and warm water (thermocline), forms layers that act as barriers to water mixing.

See also

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