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Marine Habitat Classification


Description of biotope or habitat type

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   Infralittoral fine sand


Habitat (physical) description

Salinity Full (30-35 ppt)
Wave exposure Exposed, Moderately exposed, Sheltered
Tidal streams Strong (3-6 kn), Moderately strong (1-3 kn), Weak (>1 kn), Very weak (negligible)
Substratum Medium to very fine sand
Zone Infralittoral
Depth Band 0-5 m, 5-10 m, 10-20 m
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.IFiSa Infralittoral 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.

Description

Clean sands which occur in shallow water, either on the open coast or in tide-swept channels of marine inlets. The habitat typically lacks a significant seaweed component and is characterised by robust fauna, particularly amphipods (Bathyporeia) and robust polychaetes including Nephtys cirrosa and Lanice conchilega.

Situation

No situation data available.

Temporal variation

No temporal data available.

Characterising Species

Taxon Relative importance of taxon for defining this community (%) Typical abundance - SACFOR scale % of core records where taxon was recorded
Hydrallmania falcata 10 Occasional 41-60 %
Sertularia cupressina 4 21-40 %
Urticina felina 4 Rare 21-40 %
Nephtys cirrosa 31 Common 41-60 %
Scoloplos armiger 2 21-40 %
Spio filicornis 2 Frequent 21-40 %
Spiophanes bombyx 4 21-40 %
Magelona mirabilis 9 Frequent 21-40 %
Chaetozone setosa 4 Common 21-40 %
Lanice conchilega 13 Occasional 41-60 %
Balanus crenatus 2 Occasional 21-40 %
Bathyporeia elegans 11 Frequent 21-40 %
Bathyporeia guilliamsoniana 4 Frequent 21-40 %
Pagurus bernhardus 23 Rare 61-80 %
Cancer pagurus 1 21-40 %
Liocarcinus depurator 4 Rare 21-40 %
Carcinus maenas 3 Rare 21-40 %
Alcyonidium diaphanum 4 Occasional 21-40 %
Asterias rubens 5 Occasional 21-40 %
Laminaria saccharina 1 Rare 21-40 %

Similar biotopes

Not applicable or unknown.

Biotope history

Classification Habitat code
97.06 IGS.FaS

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