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

A green seaweed (Cladophora battersii)

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



Cladophora battersii is a small filamentous green algae. It may reach up to 3 cm in height. It is a regularly branched, rather stiff species. The curved branches narrow from the base giving a spinous appearance. Growth predominently occurs between the base and the apex of the thallus. It is usually unattached, forming dark green masses.

Recorded distribution in Britain and Ireland

Currently known from three locations around the British Isles and Ireland: Portland (Dorset), North Uist (Inverness-shire) and Roundstone (County Galway).

Global distribution



Cladophora battersii is a shallow subtidal species often found loose-lying in sheltered habitats, occasionally tangled around Zostera plants and other algae.

Depth range


Identifying features

  • Dark green filamentous masses.
  • Curved, pointed branches.
  • Dominent growth in the middle of the thallus.
  • Rhizoids absent.

Additional information

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Listed by

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Further information sources

Search on:


  1. Burrows, E.M., 1991. Seaweeds of the British Isles. Volume 2. Chlorophyta. London: British Museum (Natural History).

  2. Dickinson, C.I., 1963. British seaweeds. London & Frome: Butler & Tanner Ltd.

  3. Hardy, F.G. & Guiry, M.D., 2003. A check-list and atlas of the seaweeds of Britain and Ireland. London: British Phycological Society

  4. 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.]


  1. NBN (National Biodiversity Network) Atlas. Available from:

  2. OBIS (Ocean Biogeographic Information System),  2019. Global map of species distribution using gridded data. Available from: Ocean Biogeographic Information System. Accessed: 2019-05-27

  3. Royal Botanic Garden Edinburgh, 2018. Royal Botanic Garden Edinburgh Herbarium (E). Occurrence dataset: accessed via on 2018-10-02.


This review can be cited as:

Barnes, M.K.S. 2008. Cladophora battersii A green seaweed. 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 27-05-2019]. Available from:

Last Updated: 02/06/2008