Seven-armed starfish (Luidia ciliaris)
|Researched by||Penny Avant||Refereed by||Admin|
|Other common names||-||Synonyms||-|
Recorded distribution in Britain and IrelandOccurs around the north, west and southwest coasts of Britain and all around the Irish coast.
Global distributionFound from the Faeroe Islands to Cape Verde and in the Mediterranean.
HabitatFound on sand, gravel, mixed sediments and rock from the lower shore to about 400 m. May partly burrow into soft sediments.
- A large starfish, typically up to 40 cm in diameter, may occasionally reach 60 cm.
- Orange-brown or reddish in colour and lighter on the underside.
- 7 long arms that taper only at their outer ends.
- A conspicuous fringe of stiff, white spines projects from the margins of each arm.
- The tube feet are long and have no suckers.
Additional informationLuidia ciliaris is a fragile species and may have arms that vary in width or length due to their regeneration.
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Bruce, J.R., Colman, J.S. & Jones, N.S., 1963. Marine fauna of the Isle of Man. Liverpool: Liverpool University Press.
Hayward, P.J. & Ryland, J.S. (ed.) 1995b. Handbook of the marine fauna of North-West Europe. Oxford: Oxford University Press.
Howson, C.M. & Picton, B.E., 1997. The species directory of the marine fauna and flora of the British Isles and surrounding seas. Belfast: Ulster Museum. [Ulster Museum publication, no. 276.]
Mortensen, T.H., 1927. Handbook of the echinoderms of the British Isles. London: Humphrey Milford, Oxford University Press.
Picton, B.E., 1993. A field guide to the shallow-water echinoderms of the British Isles. London: Immel Publishing Ltd.
Fenwick, 2018. Aphotomarine. Occurrence dataset http://www.aphotomarine.com/index.html Accessed via NBNAtlas.org on 2018-10-01
Manx Biological Recording Partnership, 2018. Isle of Man historical wildlife records 1990 to 1994. Occurrence dataset:https://doi.org/10.15468/aru16v accessed via GBIF.org on 2018-10-01.
NBN (National Biodiversity Network) Atlas. Available from: https://www.nbnatlas.org.
OBIS (Ocean Biodiversity Information System), 2023. Global map of species distribution using gridded data. Available from: Ocean Biogeographic Information System. www.iobis.org. Accessed: 2023-12-10
This review can be cited as:
Last Updated: 24/04/2008