information on the biology of species and the ecology of habitats found around the coasts and seas of the British Isles

Orange-striped anemone (Diadumene lineata)

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



Diadumene lineata has up to 100 long tentacles arranged irregularly atop a smooth column, which is subdivided into a basal, thick-walled scaphus and a distal, thin-walled capitulum. The diameter of the column is 1-2 cm, its height is typically 1-2 cm and is coloured olive-green, with prominent orange or yellow longitudinal stripes.

Recorded distribution in Britain and Ireland

Commonly found on all coasts of Britain and in west and south west Ireland.

Global distribution

Found coastally along continental Europe and along Atlantic coast of N. America, from Cape Hatteras to the Bay of Fundy. Native population exists in Japan and the Pacific Ocean.


Fouls hard substrata in harbours and brackish inshore waters. Associates with mussel and oyster shells, stones and piers. Often found intertidally. May foul hulls of boats as associate of attached bivalve shells.

Depth range


Identifying features

  • 1-2 cm diameter, 1-2 cm height.
  • Column olive green with yellow or orange longitudinal stripes.
  • Up to 100 long tentacles, irregularly arranged.
  • Column smooth, divided into scapus & capitulum.
  • Acontia present.

Additional information

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Further information sources

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    This review can be cited as:

    Bilewitch, J. 2009. Diadumene lineata Orange-striped anemone. In Tyler-Walters H. and Hiscock K. (eds) Marine Life Information Network: Biology and Sensitivity Key Information Reviews, [on-line]. Plymouth: Marine Biological Association of the United Kingdom. [cited 25-09-2018]. Available from:

    Last Updated: 28/07/2009