Biodiversity & Conservation

Polydora sp. tubes on upward-facing circalittoral soft rock



Image Keith Hiscock - Polydora sp. tubes on upward-facing circalittoral soft rock, with the sponge Suberites sp. also present. Image width ca 2 m.
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Distribution map

CR.MCR.SfR.Pol recorded (dark blue bullet) and expected (light blue bullet) distribution in Britain and Ireland (see below)

  • EC_Habitats

For a list of 2004 characterising species please see the JNCC website.

Map icon UK and Ireland classification

Major habitat CR Circalittoral rock (and other hard substrata)
Habitat complex CR.MCR Moderate energy circalittoral rock
Biotope complex CR.MCR.SfR Soft rock communities
Biotope CR.MCR.SfR.Pol Polydora sp. tubes on moderately exposed sublittoral soft rock

Additional information icon Additional information

European Union Nature Information System (EUNIS) code: A3.6/B-MCR.SfR Communities on moderately exposed soft circalittoral rock.

Polydora sp. can dominate rock but, because other species occur, a different biotope is identified. For instance, in Firestone Bay in Plymouth the biotope SCR.SubSoAS (Suberites spp. and other sponges with solitary ascidians on very sheltered circalittoral rock) has been identified, but occurs with MCR.Pol (Keith Hiscock pers. comm.).

This review can be cited as follows:

Hill, J.M. 2001. Polydora sp. tubes on upward-facing circalittoral soft rock. Marine Life Information Network: Biology and Sensitivity Key Information Sub-programme [on-line]. Plymouth: Marine Biological Association of the United Kingdom. [cited 25/11/2015]. Available from: <>