CHLOROPHYTA : Bryopsidales : CodiaceaeGREEN ALGAE

Codium atlanticum (Cotton) P Silva


Description: Thallus dichotomously branched, terete, to 50 cms long with a felt-like surface and spongy feel. Utricles bluntly pointed.

Habitat: Common. Epilithic in mid-littoral rock pools and the upper sublittoral.

Distribution: Widespread on the coasts of the British Isles. Europe: Norway. Further afield: Japan

Similar Species: Other branched species of Codium do not have a mucronate utricles.

Key Identification Features:

  • Bluntly mucronate utricles.

Distribution Map from NBN: Codium atlanticum at National Biodiversity Network mapping facility, data for UK.

iNaturalist: Codium atlanticum at iNaturalist World Species Observations database.

WoRMS: Codium atlanticum at World Register of Marine Species.

Previous species Next species
 Morton, O., Keatley, L., Morrow, C.C. & Picton, B.E. (2026). Codium atlanticum. (Cotton) P Silva. [In] Encyclopedia of Marine Life of Britain and Ireland.
https://habitas.org/mbdp/species.php?item=ZS4200. Accessed on 2026-11-01