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
    
    • MA11 : Arctic littoral rock
      
    • MA12 : Atlantic littoral rock
      
    • MA13 : Baltic hydrolittoral rock
      
    • MA14 : Black sea littoral rock
      
    • MA15 : Mediterranean littoral rock
      
  • MA2 : Littoral biogenic habitat
    
  • MA3 : Littoral coarse sediment
    
    • MA31 : Arctic littoral coarse sediment
      
    • MA32 : Atlantic littoral coarse sediment
      
    • MA33 : Baltic hydrolittoral coarse sediment
      
      • MA331 : Baltic hydrolittoral littoral coarse sediment characterized by emergent vegetation
        
      • MA332 : Baltic hydrolittoral coarse sediment characterized by submerged vegetation
        
        • MA3321 : Baltic hydrolittoral coarse sediment characterized by Potamogeton perfoliatus and/or Stuckenia pectinatas
          
        • MA3322 : Baltic hydrolittoral coarse sediment habitats characterized by Zannichellia spp. and/or Ruppias pp. and /or Zostera noltii
          
        • MA3323 : Baltic hydrolittoral coarse sediment characterized by Charales
          
        • MA3324 : Baltic hydrolittoral coarse sediiment habitats characterized by Ranunculus spp
          
        • MA3325 : Baltic hydrolittoral mixed sediment habitats characterized by Myriophyllum
          
        • MA3326 : Baltic hydrolittoral mixed sediment habitats characterized by Zostera marina
          
      • MA333 : Baltic hydrolittoral mixed sediment characterized by sparse or no macrocommunity
        
      • MA334 : Baltic hydrolittoral coarse sediment characterized by sparse or no macroscopic biotic structures
        
    • MA34 : Black sea littoral coarse sediment
      
    • MA35 : Mediterranean littoral coarse sediment
      
  • MA4 : Littoral mixed sediment
    
  • MA5 : Littoral sand
    
  • MA6 : 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
    
  • MD2 : Offshore circalittoral biogenic habitat
    
  • MD3 : Offshore circalittoral coarse sediment
    
  • MD4 : Offshore circalittoral mixed sediment
    
  • MD5 : Offshore circalittoral sand
    
  • MD6 : Offshore circalittoral mud
    
    • MD61 : Arctic offshore circalittoral mud
      
    • MD62 : Atlantic offshore circalittoral mud
      
    • MD63 : Baltic offshore circalittoral mud
      
    • MD64 : Black Sea offshore circalittoral mud
      
    • MD65 : Mediterranean 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
    
    • MG31 : Arctic abyssal coarse sediment
      
    • MG32 : Atlantic abyssal coarse sediment
      
    • MG34 : Black Sea abyssal coarse sediment
      
    • MG35 : Mediterranean 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