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
    
  • MA6 : Littoral mud
    
    • MA61 : Arctic littoral mud
      
    • MA62 : Atlantic littoral mud
      
    • MA63 : Baltic hydrolittoral mud
      
    • 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
    
  • 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
    
  • MG4 : Abyssal mixed sediment
    
  • MG5 : Abyssal sand
    
  • MG6 : Abyssal mud
    
• MH : Pelagic water column
  
• MJ : Ice-associated marine habitats
  
• N : Coastal habitats
  
• Q : Wetlands
  
  • Q1 : Raised and blanket bogs
    
  • Q2 : Valley mires, poor fens and transition mires
    
    • Q21 : Oceanic valley mire
      
    • Q22 : Poor fen
      
    • Q23 : Relict mire of Mediterranean mountains
      
    • Q24 : Intermediate fen and soft-water spring mire
      
    • Q25 : Non-calcareous quaking mire
      
      • Q251 : Carex lasiocarpa swards
        
      • Q252 : Carex diandra quaking mires
        
      • Q253 : Carex rostrata quaking mires
        
      • Q254 : Carex limosa swards
        
      • Q255 : Carex chordorrhiza swards
        
      • Q256 : Carex heleonastes swards
        
      • Q257 : Rhynchospora alba quaking bogs
        
      • Q258 : Sphagnum and Eriophorum rafts
        
      • Q259 : Menyanthes trifoliata and Potentilla palustris rafts
        
      • Q25A : Calla palustris mires
        
      • Q25B : Brown moss carpets
        
      • Q25C : Eriophorum vaginatum quaking bogs
        
      • Q25D : Molinia caerulea quaking bogs
        
      • Q25E : Calamagrostis stricta quaking bogs
        
      • Q25F : Scirpus hudsonianus (Trichophorum alpinum) quaking bogs
        
      • Q25G : Iberian quaking bogs
        
      • Q25H : Wet, open, acid peat and sand, with Rhynchospora alba and Drosera
        
      • Q25J : Balkanic quaking bogs
        
  • Q3 : Palsa mires
    
  • Q4 : Base-rich fens and calcareous spring mires
    
  • Q5 : Helophyte beds
    
  • Q6 : Periodically exposed shores
    
• 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