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CR.HCR.XFa.ByErSp.Cyl Mixed turf of bryozoans and erect sponges with Cylista elegans on tide-swept ciraclittoral rock
Published date 2015-03This variant is typically found on wave-exposed circalittoral bedrock and boulders, on steep slopes and upper faces in moderate tidal streams. This species-rich biotope is characterised by a dense spo...
M.ArMB.Bi Arctic mid bathyal biogenic structure
Published date 2015-03A biogenic structure is formed when reef-forming species, such as cold water corals, attach to any hard substrate present and grow over the surrounding area forming a secondary substrate over the top....
M.ArLB Arctic lower bathyal
Published date 2015-03Arctic waters are much cooler than Atlantic waters (typically below 0°C). Within the UK, Arctic seabed habitats occur at depths greater than 600 m in the Faroe-Shetland Channel. The Arctic lower bathy...
M.AtUB.Ro.DeeSpo Deep sponge aggregation on Atlantic upper bathyal rock and other hard substrata
Published date 2015-03This broad community contains assemblages where sponges dominate sediment habitats. Sponges can be of all morphotypes except encrusting. Aggregations of Axinellid sponges as well as lobose sponges hav...
CR.MCR.EcCr.CarSwi.Aglo Caryophyllia smithii, Swiftia pallida and Alcyonium glomeratum on wave-sheltered circalittoral rock
Published date 2015-03This variant typically occurs on sheltered, ridged, circalittoral bedrock or boulders subject to only weak tidal streams, but may be found in somewhat more exposed conditions. It is found in water dep...
M.AtMB.Co Atlantic mid bathyal coarse sediment
Published date 2015-03Deep-sea coarse sediment has not been sampled widely for infauna so little is currently known about infaunal community structure. Epifauna tend to be sparse mobile species or burrowing fauna such as a...
CR.MCR.EcCr.CarSp.PenPcom Caryophyllia smithii and sponges with Pentapora foliacea, Porella compressa and crustose communities on wave-exposed circalittoral rock
Published date 2015-03This variant is typically found on the upper faces and vertical sides of wave-exposed bedrock or boulders subject to moderately strong to weak tidal streams. The fauna is often sparse with the frequen...
CR.MCR.SfR.Pid Piddocks with a sparse associated fauna in sublittoral very soft chalk or clay
Published date 2015-03This biotope occurs on circalittoral soft rock, such as soft chalk or clay, most often in moderately exposed tide-swept conditions. As soft chalk and firm clay are often too soft for sessile filter-fe...
CR.MCR.EcCr.FaAlCr.Flu Flustra foliacea on slightly scoured silty circalittoral rock
Published date 2015-03This variant is typically found on the upper faces of moderately wave-exposed circalittoral bedrock or boulders subjected to moderately strong tidal streams. These rocky patches may be interspersed wi...
M.ArMB.Ro.CriCom Crinoid dominated community on Arctic mid bathyal rock and other hard substrata
Published date 2015-03This broad community contains assembages where crinoids dominate the fauna. Crinoid assemblages are found typically in areas with higher current speeds that facilitate filter feeding, such as the shel...