Skip to Content

Marine Habitat Classification

Description of biotope or habitat type

To understand more about what this page is describing, see How to use the classification. See also How to cite.

   Squat lobster assemblage on Atlantic mid bathyal coarse sediment (Lophelia rubble)

Physical habitat description

Salinity Full (30-35 ppt)
Wave exposure
Tidal streams
Substratum Coarse sediment - coral gravel
Zone Atlantic mid bathyal
Depth Band Biotope depth range 600 - 1300 m (based on zone); assemblage recorded from 225 - 1129 m; median 298 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 M.AtMB.Co.SpaEnc.SquRub Squat lobster assemblage on Atlantic mid bathyal coarse sediment (<i>Lophelia</i> rubble)

  • 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.


This biotope describes the fringing rubble apron of cold water coral mounds or accumulations of gravel size Lophelia pertusa skeleton. Freiwald et al. (2004) list those species occurring within this zone on cold water coral reefs. The same assemblage was recorded in the Atlantic upper bathyal but associated species are likely to vary with depth. Characterising species listed refer to all squat lobster on Lophelia rubble assemblages not just those found associated with the zone and substrate specified in this biotope.


No situation data available.

Temporal variation

No temporal variation data available.

Characterising species

Taxon % of core records where taxon was recorded
Bonellia viridis
Porifera massive lobose
Porifera encrusting (blue)
Porifera encrusting (pale - yellow, white, grey, cream, pink
Lophelia pertusa
Madrepora oculata

Similar biotopes or habitat types

The same epifaunal assemblage in the upper bathyal. Associated infauna are likely to differ.

Back to top