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)
  
  • MA1 : Littoral rock
    
  • MA2 : Littoral biogenic habitat
    
  • MA3 : Littoral coarse sediment
    
  • MA4 : Littoral mixed sediment
    
  • MA5 : Littoral sand
    
    • MA51 : Arctic littoral sand
      
    • MA52 : Atlantic littoral sand
      
    • MA53 : Baltic hydrolittoral sand
      
    • MA54 : Black sea littoral sand
      
    • MA55 : Mediterranean littoral sand
      
      • MA551 : Biocenosis of Mediterranean supralittoral sands
        
      • MA552 : Biocenosis of Mediterranean mediolittoral sands
        
      • MA553 : Assemblages of Mediterranean mediolittoral muddy sands and muds in lagoons and estuaries biocenosis
        
  • MA6 : Littoral mud
    
    • MA61 : Arctic littoral mud
      
    • MA62 : Atlantic littoral mud
      
    • MA63 : Baltic hydrolittoral mud
      
      • MA631 : Baltic hydrolittoral mud characterized by emergent vegetation
        
      • MA632 : Baltic hydrolittoral mud dominated submerged rooted plants
        
        • MA6321 : Baltic hydrolittoral mud characterized by Potamogeton perfoliatus and/or Stuckenia pectinata
          
        • MA6322 : Baltic hydrolittoral mud characterized by Zannichellia spp. and/or Ruppia spp. and /or Zostera noltii
          
        • MA6323 : Baltic hydrolittoral mud characterized by Myriophyllum
          
        • MA6324 : Baltic hydrolittoral mud characterized by Charales
          
        • MA6325 : Baltic hydrolittoral mud characterized by Najas marina
          
        • MA6326 : Baltic hydrolittoral mud characterized by Ranunculus spp.
          
        • MA6327 : Baltic hydrolittoral mud characterized by Zostera marina
          
        • MA6328 : Baltic hydrolittoral mud characterized by Eleocharis
          
      • MA633 : Baltic hydrolittoral mud characterized by sparse or no macroscopic communities
        
    • MA64 : Black Sea littoral mud
      
    • MA65 : Mediterranean littoral mud
      
  • MB1 : Infralittoral rock
    
  • MB2 : Infralittoral biogenic habitat
    
  • MB3 : Infralittoral coarse sediment
    
  • MB4 : infralittoral mixed sediment
    
  • MB5 : Infralittoral sand
    
  • MB6 : Infralittoral mud
    
  • MC1 : Circalittoral rock
    
  • MC2 : Circalittoral biogenic habitat
    
  • MC3 : Circalittoral coarse sediment
    
  • MC4 : Circalittoral mixed sediment
    
  • MC5 : Circalittoral sand
    
  • MC6 : Circalittoral mud
    
  • MD1 : Offshore circalittoral rock
    
    • MD11 : Arctic offshore circalittoral rock
      
    • MD12 : Atlantic offshore circalittoral rock
      
    • MD13 : Baltic offshore circalittoral rock
      
    • MD14 : Black Sea offshore circalittoral rock
      
    • MD15 : Mediterranean offshore circalittoral rock
      
  • MD2 : Offshore circalittoral biogenic habitat
    
  • MD3 : Offshore circalittoral coarse sediment
    
  • MD4 : Offshore circalittoral mixed sediment
    
  • MD5 : Offshore circalittoral sand
    
  • MD6 : Offshore circalittoral mud
    
  • ME1 : Upper bathyal rock
    
  • ME2 : Upper bathyal biogenic habitat
    
  • ME3 : Upper bathyal coarse sediment
    
  • ME4 : Upper bathyal mixed sediment
    
  • ME5 : Upper Bathyal sand
    
  • ME6 : Upper Bathyal mud
    
  • MF1 : Lower bathyal rock
    
  • MF2 : Lower bathyal biogenic habitat
    
  • MF3 : Lower bathyal coarse sediment
    
  • MF4 : Lower bathyal mixed sediment
    
  • MF5 : Lower bathyal sand
    
  • MF6 : Lower bathyal mud
    
  • MG1 : Abyssal rock
    
  • MG2 : Abyssal biogenic habitat
    
  • MG3 : Abyssal coarse sediment
    
  • MG4 : Abyssal mixed sediment
    
  • MG5 : Abyssal sand
    
  • MG6 : Abyssal mud
    
• MH : Pelagic water column
  
• MJ : Ice-associated marine habitats
  
• N : Coastal habitats
  
• 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