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Marine Habitat Classification

Description of biotope or habitat type

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   Echinocyamus pusillus, Ophelia borealis and Abra prismatica in circalittoral fine sand

Physical habitat description

Salinity Full (30-35 ppt)
Wave exposure
Tidal streams
Substratum Medium to fine sand.
Zone Circalittoral
Depth Band
Other Features

Download comparative physical and biological data. The comparative tables enable a rapid comparison of the species composition and principal physical characteristics between a given set of biotopes.

Distribution of habitat SS.SSa.CFiSa.EpusOborApri <I>Echinocyamus pusillus</I>, <I>Ophelia borealis</I> and <I>Abra prismatica</I> in circalittoral fine sand

  • Records used to define the biotope (core records)
  • Other records assigned to this biotope, marked as 'certain'
  • Other records assigned to this biotope, marked as 'uncertain'
  • Predicted extent of the level 3 (for sublittoral rock & deep sea) or 4 (for sublittoral sediment) habitat

Point data based on records in the UK Marine Recorder Snapshot. Predicted habitat extent is from UKSeaMap.


Circalittoral and offshore medium to fine sand (from 40m to 140m) characterised by the pea urchin Echinocyamus pusillus, the polychaete Ophelia borealis and the bivalve Abra prismatica. Other species may include the polychaetes Spiophanes bombyx, Pholoe sp., Exogone spp., Sphaerosyllis bulbosa, Goniada maculata, Chaetozone setosa, Owenia fusiformis, Glycera lapidum, Lumbrineris latreilli and Aricidea cerrutii and the bivalves Thracia phaseolina and Moerella pygmaea and to a lesser extent Spisula elliptica and Timoclea ovata. This biotope has been found in the central and northern North Sea.


No situation data available.

Temporal variation

No temporal data available.

Characterising species

Characterising species data not applicable.

Similar biotopes or habitat types

This biotope is similar to MedLumVen but it occurs in finer sediments with a lower proportion of venerid bivalves.

Classification history of this biotope or habitat type

Classification version Code
96.7 MCR.Flu in part

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