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)
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MA1 : Littoral rock
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MA11 : Arctic littoral rock
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MA12 : Atlantic littoral rock
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MA121 : Lichens or small green algae on Atlantic supralittoral and littoral fringe rock
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MA122 : Mytilus edulis and/or barnacle communities on wave-exposed Atlantic littoral rock
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MA123 : Seaweed communities on full salinity Atlantic littoral rock
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MA1231 : Fucus distichus and Fucus spiralis f. nana on extremely exposed upper eulittoral rock
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MA1232 : Corallina officinalis on exposed to moderately exposed lower eulittoral rock
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MA12321 : Corallina officinalis and Mastocarpus stellatus on exposed to moderately exposed lower eulittoral rock
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MA12322 : Corallina officinalis, Himanthalia elongata and Patella ulyssiponensis on very exposed lower eulittoral rock
![Himanthalia elongata [and red seaweeds on exposed lower eulittoral rock](images/img_bullet.gif)
![Palmaria palmata [on very exposed to moderately exposed lower eulittoral rock](images/img_bullet.gif)
![Mastocarpus stellatus [and] Chondrus crispus [on very exposed to moderately exposed lower eulittoral rock](images/img_bullet.gif)
![[Osmundea pinnatifida] on moderately exposed mid eulittoral rock](images/img_bullet.gif)
![[Ceramium] sp. and piddocks on eulittoral fossilised peat](images/img_bullet.gif)
![[Ascophyllum nodosum], sponges and ascidians on tide-swept mid eulittoral rock](images/img_bullet.gif)
![[Fucus serratus], sponges and ascidians on tide-swept lower eulittoral rock](images/img_bullet.gif)
![Fucus serratus [with sponges, ascidians and red seaweeds on tide-swept lower eulittoral mixed substrata](images/img_bullet.gif)
![Pelvetia canaliculata [on sheltered littoral fringe rock](images/img_bullet.gif)
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![Enteromorpha [spp. on freshwater-influenced and/or unstable upper eulittoral rock](images/img_bullet.gif)
![Porphyra purpurea [or] Enteromorpha [spp. on sand-scoured mid or lower eulittoral rock](images/img_bullet.gif)
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![Arctic circalittoral mixed sediment](images/img_bullet.gif)
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![Black Sea circalittoral mixed sediment](images/img_bullet.gif)
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![Arctic offshore circalittoral mixed sediment](images/img_bullet.gif)
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![Black Sea offshore circalittoral mixed sediment](images/img_bullet.gif)
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![Arctic offshore circalittoral mud](images/img_bullet.gif)
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![Black Sea offshore circalittoral mud](images/img_bullet.gif)
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