EUNIS habitat type hierarchical view (marine version 2022 & terrestrial version 2021)
The EUNIS habitat classification review is on-going. Four groups are pending review: Inland waters, Wetlands, Constructed, industrial and other artificial habitats and Complexes.-
M : Marine benthic habitats (MA-MG)
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MH : Pelagic water column
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MH1 : Neuston
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MH2 : Completely mixed water column with reduced salinity
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MH3 : Completely mixed water column with full salinity
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MH4 : Partially mixed water column with reduced salinity and medium or long residence time
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MH5 : Unstratified water column with reduced salinity
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MH6 : Vertically stratified water column with reduced salinity
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MH61 : Arctic vertically stratified water column with reduced salinity
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MH62 : Atlantic vertically stratified water column with reduced salinity
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MH63 : Baltic vertically stratified water column with reduced salinity
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MH631 : Baltic water column with ephemeral thermal stratification and reduced salinity
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MH632 : Baltic water column with seasonal thermal stratification and reduced salinity
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MH633 : Baltic water column with permanent thermal stratification and reduced salinity
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MH634 : Baltic water column with ephemeral halocline and reduced salinity
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MH635 : Baltic water column with seasonal halocline and reduced salinity
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MH636 : Baltic water column with permanent halocline and reduced salinity
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MH6361 : Baltic offshore deep water above the halocline
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MH6362 : Baltic offshore deep water below the halocline
![Baltic water column with ephemeral oxygen stratification and reduced salinity](images/img_bullet.gif)
![Baltic water column with seasonal oxygen stratification and reduced salinity](images/img_bullet.gif)
![Baltic water column with permanent oxygen stratification and reduced salinity](images/img_bullet.gif)
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![Arctic euphotic (epipelagic) zone in unstratified full salinity water](images/img_bullet.gif)
![Arctic mesopelagic zone in unstratified full salinity water](images/img_bullet.gif)
![Arctic bathypelagic zone in unstratified full salinity water](images/img_bullet.gif)
![Arctic abyssopelagic zone in unstratified full salinity water](images/img_bullet.gif)
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![Black Sea euphotic (epipelagic) zone in unstratified full salinity water](images/img_bullet.gif)
![Black Sea mesopelagic zone in unstratified full salinity water](images/img_bullet.gif)
![Black Sea bathypelagic zone in unstratified full salinity water](images/img_bullet.gif)
![Black Sea abyssopelagic zone in unstratified full salinity water](images/img_bullet.gif)
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