Description: Small uniseriate filaments, erect, tufted and highly branched to 10 mm.

Habitat: Common. Epiphytic or epizoic in the lower littoral and sublittoral to 5 m. Frequently found on Palmaria palmata.

Distribution: Generally found around the British Isles from the Shetlands to the Channel Islands. Europe: Mediterranean, Portugal, Spain, France, the Baltic, Norway and the Faroes. Atlantic coast of North America: Canada, Maine, New Hampshire, Massachusetts, Rhode Island, New Jersey and Virginia. Further afield: California and Australia.

Similar Species: All species of Colaconemna and Acrochaetium are very similar, microscopic examination required for identification.

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

iNaturalist: Colaconema daviesii at iNaturalist World Species Observations database.

WoRMS: Colaconema daviesii at World Register of Marine Species.