Description: Thallus cylindrical, erect and branched to 8 cm long. The cortication at the nodes is clearly to seen by the naked eye.

Habitat: Relatively uncommon. Epiphytic, epizoic and epilithic from extreme low littoral to 26 m.

Distribution: Records sparse, but generally distributed around the British Isles. Europe: Mediterranean, Atlantic coast of France, Netherlands and Norway. Widely distributed on the Atlantic coast of North Atlantic: Canada, Massachusetts, Rhode Island, Conneticut and Long Island, New Jersey, Delaware, Virginia and Florida. Further afield: West Indies.

Similar Species: Other species of Ceramium.

Key Identification Features:

• Corticate only at the nodes. Without spines.

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

iNaturalist: Ceramium cimbricum at iNaturalist World Species Observations database.

WoRMS: Ceramium cimbricum at World Register of Marine Species.