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
  
• MJ : Ice-associated marine habitats
  
• N : Coastal habitats
  
  • N1 : Coastal dunes and sandy shores
    
  • N2 : Coastal shingle
    
    • N21 : Atlantic, Baltic and Arctic coastal shingle beach
      
    • N22 : Mediterranean and Black Sea coastal shingle beach
      
      • N221 : Gravel beach communities of the Mediterranean region
        
      • N222 : Biocenosis of slowly drying wracks on Mediterranean and Black Sea coastal shingle beaches
        
  • N3 : Rock cliffs, ledges and shores, including the supralittoral
    
    • N31 : Atlantic and Baltic rocky sea cliff and shore
      
    • N32 : Mediterranean and Black Sea rocky sea cliff and shore
      
    • N33 : Macaronesian rocky sea cliff and shore
      
    • N34 : Atlantic and Baltic soft sea cliff
      
    • N35 : Mediterranean and Black Sea soft sea cliff
      
• Q : Wetlands
  
• R : Grasslands and lands dominated by forbs, mosses or lichens
  
  • R1 : Dry grasslands
    
  • R2 : Mesic grasslands
    
  • R3 : Seasonally wet and wet grasslands
    
    • R31 : Mediterranean tall humid inland grassland
      
      • R311 : Mediterranean tall humid grassland of mountains
        
      • R312 : Mediterranean tall humid grassland of lowlands
        
    • R32 : Mediterranean short moist grassland of lowlands
      
    • R33 : Mediterranean short moist grassland of mountains
      
    • R34 : Submediterranean moist meadow
      
    • R35 : Moist or wet mesotrophic to eutrophic hay meadow
      
    • R36 : Moist or wet mesotrophic to eutrophic pasture
      
    • R37 : Temperate and boreal moist or wet oligotrophic grassland
      
  • R4 : Alpine and subalpine grasslands
    
    • R41 : Snow-bed vegetation
      
    • R42 : Boreal and arctic acidophilous alpine grassland
      
    • R43 : Temperate acidophilous alpine grassland
      
    • R44 : Arctic-alpine calcareous grassland
      
    • R45 : Alpine and subalpine calcareous grassland of the Balkans and Apennines
      
  • R5 : Forest fringes and clearings and tall forb stands
    
  • R6 : Inland salt steppes and salt marshes
    
  • R7 : Sparsely wooded grasslands
    
• 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