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Beggiatoa spp. on anoxic sublittoral mud
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Alaria esculenta on exposed sublittoral fringe bedrock
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Alcyonium digitatum and faunal crust communities on vertical circalittoral bedrock
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Ascophyllum nodosum and Fucus vesiculosus on variable salinity mid eulittoral rock
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Ascophyllum nodosum on full salinity mid eulittoral rock
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Balanus crenatus and Tubularia indivisa on extremely tide-swept circalittoral rock
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Barren and/or boulder-scoured littoral cave walls and floors
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Branchiostoma lanceolatum in circalittoral coarse sand with shell gravel
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Bryozoan turf and erect sponges on tide-swept circalittoral rock
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Caryophyllia smithii and Swiftia pallida on circalittoral rock
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Caryophyllia smithii, Swiftia pallida and Alcyonium glomeratum on wave-sheltered circalittoral rock
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Cerianthus lloydii and other burrowing anemones in circalittoral muddy mixed sediment
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Circalittoral caves and overhangs
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Circalittoral faunal communities in variable salinity
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Coralline crusts in surge gullies and scoured infralittoral rock
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Crepidula fornicata and Mediomastus fragilis in variable salinity infralittoral mixed sediment
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Crustose sponges on extremely wave-surged infralittoral cave or gully walls
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Dendrodoa grossularia and Clathrina coriacea on wave-surged vertical infralittoral rock
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Eunicella verrucosa and Pentapora foliacea on wave-exposed circalittoral rock
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Flustra foliacea and Haliclona oculata with a rich faunal turf on tide-swept circalittoral mixed substrata
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Foliose red seaweeds on exposed lower infralittoral rock
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Fucus serratus and large Mytilus edulis on variable salinity lower eulittoral rock
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Grazed Laminaria hyperborea forest with coralline crusts on upper infralittoral rock
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Grazed Laminaria hyperborea park with coralline crusts on lower infralittoral rock
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Grazed Saccharina latissima with Echinus, brittlestars and coralline crusts on sheltered infralittoral rock
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Hartlaubella gelatinosa and Conopeum reticulum on low salinity infralittoral mixed substrata
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Hediste diversicolor in littoral mud
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Lagis koreni and Phaxas pellucidus in circalittoral sandy mud
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Laminaria hyperborea forest and foliose red seaweeds on moderately exposed upper infralittoral rock
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Laminaria hyperborea park with hydroids, bryozoans and sponges on tide-swept lower infralittoral rock
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Limaria hians beds in tide-swept sublittoral muddy mixed sediment
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Lithothamnion glaciale maerl beds in tide-swept variable salinity infralittoral gravel
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Mediomastus fragilis, Lumbrineris spp. and venerid bivalves in circalittoral coarse sand or gravel
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Melinna palmata with Magelona spp. and Thyasira spp. in infralittoral sandy mud
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Mixed Laminaria hyperborea and Laminaria ochroleuca forest on moderately exposed or sheltered infralittoral rock
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Mytilus edulis and barnacles on very exposed eulittoral rock
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Mytilus edulis beds on sublittoral sediment
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Neopentadactyla mixta in circalittoral shell gravel or coarse sand
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Ophiothrix fragilis and/or Ophiocomina nigra brittlestar beds on sublittoral mixed sediment
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Pelvetia canaliculata on sheltered variable salinity littoral fringe rock
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Phymatolithon calcareum maerl beds in infralittoral clean gravel or coarse sand
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Red seaweeds and kelps on tide-swept mobile infralittoral cobbles and pebbles
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Saccharina latissima and Psammechinus miliaris on variable salinity grazed infralittoral rock
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Saccharina latissima and Chorda filum on sheltered upper infralittoral muddy sediment
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Saccharina latissima and robust red algae on infralittoral gravel and pebble
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Saccharina latissima forest on very sheltered upper infralittoral rock
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Saccharina latissima, Chorda filum and dense red seaweeds on shallow unstable infralittoral boulders or cobbles
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Sargassum muticum on shallow slightly tide-swept infralittoral mixed substrata
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Seapens, including Funiculina quadrangularis, and burrowing megafauna in undisturbed circalittoral fine mud
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Solitary ascidians, including Ascidia mentula and Ciona intestinalis, on wave-sheltered circalittoral rock
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Sparse Modiolus modiolus, dense Cerianthus lloydii and burrowing holothurians on sheltered circalittoral stones and mixed sediment
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Sponges and anemones on vertical circalittoral bedrock
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Sublittoral mixed sediment in low or reduced salinity (lagoons)
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Zostera marina beds on lower shore or infralittoral clean or muddy sand
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Zostera (Zosterella) noltei beds in littoral muddy sand
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