Description: A thin crust (to 2mm thickness) forming discrete rounded patches on rock surfaces. Pale orange-pink, yellow, ochre. Tough, fibrous. Oscules are small and inconspicuous, not raised above the surface.

Distribution: Old records are from Shetland and Brittany. Recent finds have been from Roaringwater Bay and Lough Hyne in West Cork, Ireland and from Skomer Island, South Wales.

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

iNaturalist: Halicnemia gallica at iNaturalist World Species Observations database.

WoRMS: Halicnemia gallica at World Register of Marine Species.