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. Accepted name: Codium fragile subsp. atlanticum (A.D.Cotton) P.C.Silva, 1955. AphiaID: 232219.

Classification: Biota; Plantae; Viridiplantae; Chlorophyta; Chlorophytina; Ulvophyceae; Bryopsidales; Codiaceae; Codium