Pearly top shell (Margarites helicinus)

Distribution data supplied by the Ocean Biodiversity Information System (OBIS). To interrogate UK data visit the NBN Atlas.Map Help

Summary

Description

A thin globular shell, up to 9 mm high, with 4 or 5 whorls that are separated by distinct sutures to give a stepped profile. Translucent, light brown, orange or reddish in colour, with green or purple tints. Aperture large and rounded. Lateral lobes of the foot have 6 (sometimes 5) pairs of tentacles.

Recorded distribution in Britain and Ireland

A northern species recorded from the Shetlands to as far south as Yorkshire and Dublin.

Global distribution

No information found.

Habitat

From the lower shore to the sublittoral under stones, in pools and on Fucus, Laminaria and smaller algae.

Depth range

-

Identifying features

  • A brown band is often present on the last whorl.
  • Rounded aperture.
  • Stepped outline of shell.

Additional information

No text entered

Listed by

- none -

Further information sources

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Bibliography

  1. Graham, A., 1971. British Prosobranchs. London: Academic Press.[Synopses of the British Fauna, no. 2.]

  2. Hayward, P., Nelson-Smith, T. & Shields, C. 1996. Collins pocket guide. Sea shore of Britain and northern Europe. London: HarperCollins.

  3. Hayward, P.J. & Ryland, J.S. (ed.) 1995b. Handbook of the marine fauna of North-West Europe. Oxford: Oxford University Press.

  4. Hiscock, K., Southward, A., Tittley, I., Jory, A. & Hawkins, S., 2001. The impact of climate change on subtidal and intertidal benthic species in Scotland. Scottish National Heritage Research, Survey and Monitoring Report , no. 182., Edinburgh: Scottish National Heritage

  5. 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.]

  6. McMillan, N.F., 1968. British Shells. London: Frederick Warne & Co Ltd.

Datasets

  1. Centre for Environmental Data and Recording, 2018. Ulster Museum Marine Surveys of Northern Ireland Coastal Waters. Occurrence dataset https://www.nmni.com/CEDaR/CEDaR-Centre-for-Environmental-Data-and-Recording.aspx accessed via NBNAtlas.org on 2018-09-25.

  2. Conchological Society of Great Britain & Ireland, 2018. Mollusc (marine) data for Great Britain and Ireland - restricted access. Occurrence dataset: https://doi.org/10.15468/4bsawx accessed via GBIF.org on 2018-09-25.

  3. Conchological Society of Great Britain & Ireland, 2023. Mollusc (marine) records for Great Britain and Ireland. Occurrence dataset: https://doi.org/10.15468/aurwcz accessed via GBIF.org on 2024-09-27.

  4. Environmental Records Information Centre North East, 2018. ERIC NE Combined dataset to 2017. Occurrence dataset: http://www.ericnortheast.org.ukl accessed via NBNAtlas.org on 2018-09-38

  5. NBN (National Biodiversity Network) Atlas. Available from: https://www.nbnatlas.org.

  6. OBIS (Ocean Biodiversity Information System),  2024. Global map of species distribution using gridded data. Available from: Ocean Biogeographic Information System. www.iobis.org. Accessed: 2024-12-27

Citation

This review can be cited as:

Skewes, M. 2003. Margarites helicinus Pearly top shell. In Tyler-Walters H. and Hiscock K. Marine Life Information Network: Biology and Sensitivity Key Information Reviews, [on-line]. Plymouth: Marine Biological Association of the United Kingdom. [cited 27-12-2024]. Available from: https://marlin.ac.uk/species/detail/1635

Last Updated: 04/02/2003