Cornish Biodiversity Network  -  Supporting Wildlife Recording

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Cornish Red Data (2009)

The descriptive text, below the map, is from the Cornish Red Data Book (2009). The map on this web page depicts the organisms distribution and shows the records made pre-2000 and those made since.

Alkmaria romijni - Tentacled Lagoon Worm

Range & Status

A small worm, to 5mm, with eight thread-like slimy tentacles which inhabits a tube

formed from mud. Recorded in Devon and Cornwall, in the Fal estuary and the Lynher \endash Environment Agency [as NRA] data. A benthic species, found in brackish water from eulittoral to the shallow sublittoral (a few metres down); restricted to brackish lagoons and lagoon-like habitats. Threats include loss of habitat due to human activities such as land claim, natural silting up of the site, direct pollution of the shore or pollution introduced by tide or fresh water. A nationally scarce species included in Schedule 5, Wildlife & Countryside Act 1981 (amended). The Fal estuary site is located in a Site of Scientific Interest within the Lower Fal and Helford marine Special Area of Conservation. The Lynher site is situated within the Lynher estuary SSSI and also within the Tamar estuary marine Special Area of Conservation.


I.J. Bennallick, S. Board, C.N. French, P.A. Gainey, C. Neil, R. Parslow, A. Spalding and P.E. Tompsett. eds. 2009. Red Data Book for Cornwall and the Isles of Scilly. 2nd Edition.Croceago Press.

The Cornish Red Data Book Project was led by the Cornwall and Isles of Scilly Federation for Biological Recorders (CISFBR). The full text and species accounts (minus the maps) are available on the CISFBR website.

Cornish Biodiversity Network. 2017.