Phylum: Rhodophyta   Family: Dumontiaceae

Dilsea carnosa (Schmidel) Kuntze, 1898

Red Rags

This is one of the larger red seaweeds. From deep red to lighter shades of red. The tough, leathery fronds eminate from a discoid holdfast. Found attached to rocks at the lowest part of the shore

References: 
Bunker, Brodie, Maggs & Bunker (2017) - Seaweeds of Britain and Ireland;
Hiscock (1986) - A Field Key to the British Red Seaweeds