Description: Massive-lobose. A series of lobes joined into an extensive sheet to 30cm or more across and 3cm thick. A rather watery orange grading into a purplish tinge, often brownish - orange or reddish-brown; also yellow. "Rose red." Fairly soft but quite tough. Oscules large, allowing a view of the excurrent channels; terminating lobes of the body. One or two dark exhalent canals run down the sides of the oscular lobes. In contracted preserved specimens this appears as a smooth groove.

Habitat: Found on steeply inclined and vertical rock faces in moderately and fully exposed headlands, channels and open coast.

Distribution: "Norway; Roscoff; Mediterranean etc." Known recently from Kellan Head, near Padstow, N. Cornwall; Scilly Isles, Wolf Rock; S. Devon; Skomer Is, S. Wales; Calf, Isle of Man; Blasket Islands, Co Kerry. Apparently a southern and western species in the British Isles.

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

iNaturalist: Crella rosea at iNaturalist World Species Observations database.