This is the entity page showing aggregated messages and images for the named entity.
Phymatolithon lenormandii
(J.E.Areschoug) W.H.Adey, 1966
Rachel Shucksmith Does anybody know what this is? I tried cut a piece of the rock, but it was very difficult to remove. It is from Okrney, 10m deep and was covering large areas of rock.
Sarah Bowen Encrusting pink algae? It sometimes forms these kind of 'plates' with ruffled edges.
Cynthia D. Trowbridge I agree... also the limpet on the left is often on encrusting red coralline algae.
Rachel Shucksmith And has it turned yellow because it is dying?
Erling Svensen I think the yellow is an encrusting sponge, and the pink is Phymatolithon lenormandii.
Joanne Porter Does anyone know the identity of the sponge?
Erling Svensen Can be breadcrumb sponge, Halichondria panicea
