RHODOPHYTA : Ceramiales : CeramiaceaeRED ALGAE

Ceramium secundatum Lyngbye


Description: Thallus cylindrical erect to 50 cms long. Completely corticate but young branches may appear banded.

Habitat: Epiphytic and on artifical materials. Usually sublittoral to 11 m.

Distribution: Apparently widespread in the British Isles, probably under-recorded.

Similar Species: Other Ceramium species which are not spiny and are corticate.

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

iNaturalist: Ceramium secundatum at iNaturalist World Species Observations database.

WoRMS: Ceramium secundatum at World Register of Marine Species.

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 Morton, O., Keatley, L., Morrow, C.C. & Picton, B.E. (2026). Ceramium secundatum. Lyngbye. [In] Encyclopedia of Marine Life of Britain and Ireland.
https://habitas.org/mbdp/species.php?item=ZM8239. Accessed on 2026-11-01