Biodiversity & Conservation

Sea pens and burrowing megafauna in circalittoral soft mud



Image Mark Davies - Pennatula phosphorea and Turritella communis in muddy sediment. Image width ca XX cm.
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Distribution map

SS.SMu.CFiMu.SpnMeg recorded (dark blue bullet) and expected (light blue bullet) distribution in Britain and Ireland (see below)

  • EC_Habitats
  • UK_BAP

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

Map icon UK and Ireland classification

Major habitat SS Sublittoral sediment
Habitat complex SS.SMu Sublittoral cohesive mud and sandy mud communities
Biotope complex SS.SMu.CFiMu Circalittoral fine mud
Biotope SS.SMu.CFiMu.SpnMeg Seapens and burrowing megafauna in circalittoral fine mud

Additional information icon Additional information

European Union Nature Information System (EUNIS) Habitat classification code: A4.8/B-CMU.SpMeg Seapens and burrowing megafauna of circalittoral muds (Davies & Moss, 1998).

This review can be cited as follows:

Hill, J.M. 2004. Sea pens and burrowing megafauna in circalittoral soft mud. Marine Life Information Network: Biology and Sensitivity Key Information Sub-programme [on-line]. Plymouth: Marine Biological Association of the United Kingdom. [cited 28/11/2015]. Available from: <>