Nick Upton / Two Painted top shells (Calliostoma zizyphinum) on rocks covered with red algae and barnacles low on the shore, Wembury, Devon, UK, August.
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Nick Upton / Three Painted top shells (Calliostoma zizyphinum) on submerged rocks encrusted with red algae low on the shore, Wembury, Devon, UK, August.
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Robert Thompson / Painted topshell {Calliostoma zizyphinum} on seaweed, Ballyhenry Point, Strangford Lough, County Down, Northern Ireland, September
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Robert Thompson / Common topshell {Calliostoma ziziphinum} Strangford Lough, County Down, Northern Ireland, August
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Wild Wonders of Europe / Lundgren / Close up of Painted topshell (Calliostoma zizyphinum) on a Kelp leaf, Moere coastline, Norway, February 2009
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Wild Wonders of Europe / Lundgren / Painted topshell (Calliostoma zizyphinum) on a Kelp leaf, Moere coastline, Norway, February 2009
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Sue Daly / Painted topshell {Calliostoma zizyphinum} amongst Jewel anemones, Channel Islands, UK
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Sue Daly / Painted topshell {Calliostoma zizyphinum} underwater, Channel Islands, UK
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Norbert Wu / Purple-ring Top Snail (Calliostoma annulatum) attacking Strawberry Anemone (Corynactis californica), Monterey, California
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Norbert Wu / Purple-ring Top Snail (Calliostoma annulatum) attacking Strawberry Anemone (Corynactis californica), California
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Sue Daly / Painted Topshell (Calliostoma zizyphinum), Sark, Channel Islands, UK
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Alan James / Painted topshell {Calliostoma zizyphinon} Brixham, Devon, UK