Living Heart Urchin With Commensal

Sea urchin with symbiotic molluscs: Living 'Sea Potato' sea urchin, Echinocardium cordatum (Pennant), with live bivalved molluscs, Tellimya ferruginosa (Montagu), on the low tide sand at Port Eynon, Gower, South Wales, UK

Heart Urchin or Sea Potato: Living ‘Sea Potato’ sea urchin, Echinocardium cordatum (Pennant), with live bivalved molluscs, Tellimya ferruginosa (Montagu), on the low tide sand at Port Eynon, Gower, South Wales, UK (1)

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