Mark Costello Habitat classification BIOMAR classification of Marine Biotypes 2005-08-04T02:25:02 version 2005-05-02 BioMar classification of marine biotopes by Joint Nature Conservation Committee in Britain More information: Luis Bermudez MMI Shallow muddy sand faunal communities (4) Seagrass beds (2) Shallow marine mud communities (4) Circalittoral muds (3) Shallow mixed sediment faunal communities (3) Infralittoral muds Maerl beds (muddy mixed sediments) (3) Infralittoral mixed sediments Estuarine sublittoral mixed sediments (3) Estuarine sublittoral muds (7) Angiosperm communities (lagoons) (2) Laminaria saccharina (sugar kelp) and filamentous seaweeds(4) Oyster beds (1) Sublittoral sediments Shallow sand faunal communities (5) Shallow gravel faunal communities (2) Maerl beds (open coast/clean sediments) (4) Estuarine sublittoral gravels and sands (3) Infralittoral gravels and sands Infralittoral muddy sands Littoral Zostera (seagrass) beds (1) Muddy sand shores (4) Littoral gravels and sands Shingle (pebble) and gravel shores (2) Estuarine coarse sediment shores (1) Sand shores (7) Littoral sediments Littoral muds Soft mud shores (3) Sandy mud shores (4) Saltmarsh (26 +) Littoral muddy sands Sheltered Modiolus (horse-mussel) beds (2) Faunal turfs (deep vertical rock) (2) Estuarine faunal communities (shallow rock/mixed substrata) (3) Silted kelp (stable rock) (14) Infralittoral rock Grazed fauna (moderately exposed or sheltered rock) (2) Brittlestar beds (2) Bryozoan/hydroid turfs (sand-influenced) (9) Kelp with red seaweeds (11) Mixed faunal turfs (4) Circalittoral Sabellaria reefs (1) Sand or gravel-affected or disturbed kelp and seaweed communities (7) Mussel beds (open coast circalittoral rock/mixed substrata) (3) Circalittoral rock Faunal crusts or short turfs (3) Alcyonium-dominated communities (tide-swept/vertical) (4) Barnacle, cushion sponge and Tubularia communities (very tide-swept/sheltered) (5) Exposed (tidal currents) Moderately exposed Grazed kelp with algal crusts (3) Ascidian communities (silt-influenced) (3) Soft rock communities (2) other Fauna and seaweeds (shallow vertical rock) (3) Robust faunal cushions and crusts (surge gullies & caves) (10) Kelp with cushion fauna, foliose red seaweeds or coralline crusts (13) Exposed Sheltered Submerged fucoids, green and red seaweeds (lagoonal rock) (4) Caves and overhangs (deep) (1) Brachiopod and solitary ascidian communities (8) Dense fucoids (stable rock) (10) Overhangs and caves (3) Fucoids, barnacles or ephemeral seaweeds (mixed substrata) (8) Littoral rock Mytilus (mussels) and barnacles (7) Robust fucoids and red seaweeds (3) Exposed (mussel/barnacle shores) unknownOfLittoralRock Lichens or algal crusts (9) Red seaweeds (5) Moderately exposed (barnacle/fucoid shores) Mytilus (mussels) and fucoids (3) Barnacles and fucoids (7) Sabellaria (honeycomb worm) reefs (1) Ephemeral green or red seaweeds (freshwater or sand-influenced) (3) Rockpools (9) Mytilus (mussel) beds (mixed substrata) (1) Sheltered (fucoid shores)