Nick Upton / Common mussels (Mytilus edulis) attached to rocks exposed at low tide, Trebarwith strand, Cornwall, UK, April.
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Nick Upton / Common mussels (Mytilus edulis) dense colony attached to rocks exposed at low tide, Trebarwith strand, Cornwall, UK, April.
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Nick Upton / Common mussels (Mytilus edulis) dense colony attached to rocks exposed at low tide, Trebarwith strand, Cornwall, UK, April.
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Nick Upton / Common mussels (Mytilus edulis), Dog Whelks (Nucella lapillus) and Common barnacles (Semibalanus balanoides) attached to rocks exposed at low tide, Rhossili, The Gower peninsula, Wales, UK, June.
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Nick Upton / Common mussels (Mytilus edulis) dense colony attached to rocks exposed at low tide, Trebarwith strand, Cornwall, UK, April.
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Nick Upton / Common mussels (Mytilus edulis) attached to rocks exposed at low tide, Trebarwith strand, Cornwall, UK, April.
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Mike Potts / Carrion crow (Corvus corone ) feeding on Mussel (Mytilus edulis) in tidal pool, Penrhyn Bay, Conwy, North Wales, UK. March.
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Mike Potts / Carrion crow (Corvus corone ) feeding on Mussel (Mytilus edulis) in tidal pool, Penrhyn Bay, Conwy, North Wales, UK. March.
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Mike Potts / Carrion crow (Corvus corone ) perched on rocks, feeding on Mussel (Mytilus edulis), Penrhyn Bay, Conwy, North Wales, UK. March.
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Mike Potts / Carrion crow (Corvus corone ) feeding on Mussel (Mytilus edulis) in tidal pool, Penrhyn Bay, Conwy, North Wales, UK. March.
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Alex Mustard / Ring of Blue mussels (Mytilus edulis), Common limpets (Patella vulgata) and Black-footed limpets (Patella depressa), Cornwall, UK, English Channel.
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Chris Shields / Illustration of Common Mussel (Mytilus edulis)