EUNIS habitat type hierarchical view

• A : Marine habitats
  
  • A1 : Littoral rock and other hard substrata
    
  • A2 : Littoral sediment
    
  • A3 : Infralittoral rock and other hard substrata
    
  • A4 : Circalittoral rock and other hard substrata
    
    • A4.1 : Atlantic and Mediterranean high energy circalittoral rock
    • A4.2 : Atlantic and Mediterranean moderate energy circalittoral rock
      • A4.21 : Echinoderms and crustose communities on circalittoral rock
      • A4.22 : [Sabellaria] reefs on circalittoral rock
      • A4.23 : Communities on soft circalittoral rock
      • A4.24 : Mussel beds on circalittoral rock
      • A4.25 : Circalittoral faunal communities in variable salinity
      • A4.26 : Mediterranean coralligenous communities moderately exposed to hydrodynamic action
      • A4.27 : Faunal communities on deep moderate energy circalittoral rock
    • A4.3 : Atlantic and Mediterranean low energy circalittoral rock
    •  A4.4 : Baltic exposed circalittoral rock
    •  A4.5 : Baltic moderately exposed circalittoral rock
    •  A4.6 : Baltic sheltered circalittoral rock
    • A4.7 : Features of circalittoral rock
  • A5 : Sublittoral sediment
    
  • A6 : Deep-sea bed
    
  • A7 : Pelagic water column
    
  • A8 : Ice-associated marine habitats
    
    • A8.1 : Sea ice
    • A8.2 : Freshwater ice
    • A8.3 : Brine channels
      •  A8.31 : Brine channels in first year ice
      •  A8.32 : Brine channels in multi-year ice
    • A8.4 : Under-ice habitat
• B : Coastal habitats
  
• C : Inland surface waters
  
• D : Mires, bogs and fens
  
• E : Grasslands and lands dominated by forbs, mosses or lichens
  
  • E1 : Dry grasslands
    
  • E2 : Mesic grasslands
    
  • E3 : Seasonally wet and wet grasslands
    
  • E4 : Alpine and subalpine grasslands
    
  • E5 : Woodland fringes and clearings and tall forb stands
    
  • E6 : Inland salt steppes
    
  • E7 : Sparsely wooded grasslands
    
• F : Heathland, scrub and tundra
  
• G : Woodland, forest and other wooded land
  
• H : Inland unvegetated or sparsely vegetated habitats
  
• I : Regularly or recently cultivated agricultural, horticultural and domestic habitats
  
• J : Constructed, industrial and other artificial habitats
  
• X : Habitat complexes