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)
  
• MH : Pelagic water column
  
  • MH1 : Neuston
    
  • MH2 : Completely mixed water column with reduced salinity
    
  • MH3 : Completely mixed water column with full salinity
    
  • MH4 : Partially mixed water column with reduced salinity and medium or long residence time
    
  • MH5 : Unstratified water column with reduced salinity
    
  • MH6 : Vertically stratified water column with reduced salinity
    
    • MH61 : Arctic vertically stratified water column with reduced salinity
      
    • MH62 : Atlantic vertically stratified water column with reduced salinity
      
    • MH63 : Baltic vertically stratified water column with reduced salinity
      
    • MH64 : Black Sea vertically stratified water column with reduced salinity
      
    • MH65 : Mediterranean vertically stratified water column with reduced salinity
      
  • MH7 : Fronts in reduced salinity water column
    
  • MH8 : Unstratified water column with full salinity
    
  • MH9 : Vertically stratified water column with full salinity
    
    • MH91 : Arctic vertically stratified water column with full salinity
      
    • MH92 : Atlantic vertically stratified water column with full salinity
      
      • MH921 : Atlantic water column with ephemeral thermal stratification and full salinity
        
      • MH922 : Atlantic water column with seasonal thermal stratification and full salinity
        
      • MH923 : Atlantic water column with permanent thermal stratification and full salinity
        
      • MH924 : Atlantic water column with ephemeral halocline and full salinity
        
      • MH925 : Atlantic water column with seasonal halocline and full salinity
        
      • MH926 : Atlantic water column with permanent halocline and full salinity
        
      • MH927 : Atlantic water column with ephemeral oxygen stratification and full salinity
        
      • MH928 : Atlantic water column with seasonal oxygen stratification and full salinity
        
      • MH929 : Atlantic water column with permanent oxygen stratification and full salinity
        
    • MH93 : Baltic vertically stratified water column with full salinity
      
      • MH931 : Baltic water column with ephemeral thermal stratification and full salinity
        
      • MH932 : Baltic water column with seasonal thermal stratification and full salinity
        
      • MH933 : Baltic water column with permanent thermal stratification and full salinity
        
      • MH934 : Baltic water column with ephemeral halocline and full salinity
        
      • MH935 : Baltic water column with seasonal halocline and full salinity
        
      • MH936 : Baltic water column with permanent halocline and full salinity
        
      • MH937 : Baltic water column with ephemeral oxygen stratification and full salinity
        
      • MH938 : Baltic water column with seasonal oxygen stratification and full salinity
        
      • MH939 : Baltic water column with permanent oxygen stratification and full salinity
        
    • MH94 : Black Sea vertically stratified water column with full salinity
      
      • MH941 : Black Sea water column with ephemeral thermal stratification and full salinity
        
      • MH942 : Black Sea water column with seasonal thermal stratification and full salinity
        
      • MH943 : Black Sea water column with permanent thermal stratification and full salinity
        
      • MH944 : Black Sea water column with ephemeral halocline and full salinity
        
      • MH945 : Black Sea water column with seasonal halocline and full salinity
        
      • MH946 : Black Sea water column with permanent halocline and full salinity
        
      • MH947 : Black Sea water column with ephemeral oxygen stratification and full salinity
        
      • MH948 : Black Sea water column with seasonal oxygen stratification and full salinity
        
      • MH949 : Black Sea water column with permanent oxygen stratification and full salinity
        
    • MH95 : Mediterranean vertically stratified water column with full salinity
      
  • MHA : Fronts in full salinity water column
    
    • MHA1 : Arctic fronts in full salinity water column
      
    • MHA2 : Atlantic fronts in full salinity water column
      
    • MHA3 : Baltic fronts in full salinity water column
      
    • MHA4 : Black Sea fronts in full salinity water column
      
    • MHA5 : Mediterranean fronts in full salinity water column
      
• MJ : Ice-associated marine habitats
  
• N : Coastal habitats
  
  • N1 : Coastal dunes and sandy shores
    
  • N2 : Coastal shingle
    
  • N3 : Rock cliffs, ledges and shores, including the supralittoral
    
• Q : Wetlands
  
• R : Grasslands and lands dominated by forbs, mosses or lichens
  
• S : Heathland, scrub and tundra
  
• T : Forest and other wooded land
  
• U : Inland habitats with no or little soil and mostly with sparse vegetation
  
• V : Vegetated man-made habitats
  
  • V1 : Arable land and market gardens
    
    • V11 : Intensive unmixed crops
      
    • V12 : Mixed crops of market gardens and horticulture
      
    • V13 : Arable land with unmixed crops grown by low-intensity agricultural methods
      
    • V14 : Inundated or inundatable croplands, including rice fields
      
    • V15 : Bare tilled, fallow or recently abandoned arable land
      
  • V2 : Cultivated areas of gardens and parks
    
    • V21 : Large-scale ornamental garden areas
      
      • V211 : Park flower beds, arbours and shrubbery
        
      • V212 : Botanical gardens
        
    • V22 : Small-scale ornamental and domestic garden areas
      
    • V23 : Recently abandoned garden areas
      
  • V3 : Artificial grasslands and herb dominated habitats
    
  • V4 : Hedgerows
    
  • V5 : Shrub plantations
    
  • V6 : Tree dominated man-made habitats