056 Out on the Causeway

056 Out on the Causeway – Large limpets (Patella sp.) with shells covered by dark brown encrusting algae (Brown Limpet Paint, Ralfsia verrucosa) and large barnacles (Balanus perforatus), on limestone with riddled with burrows of marine polychaete worms and boring bivalve molluscs, on the Worms Head Causeway in Gower, South Wales.