Jan Hamrsky / Narrow-winged damselfly nymph (Ischnura elegans), camouflaged on a stem of horsetail plant, June, Europe, controlled conditions
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Jan Hamrsky / Narrow-winged damselfly nymph (Ischnura elegans), camouflaged on a stem of horsetail plant, June, Europe, controlled conditions
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Jan Hamrsky / Great ramshorn snails (Planorbarius corneus) juvenil, feeding on a stem of horsetail plant, Europe, November, controlled conditions
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Ross Hoddinott / Blue-tailed damselfly (Ischnura elegans), male on Common horsetail (Equisetum arvense), Cornwall, UK. June.
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Michael Pitts / Musket balls scattered on the seabed. From the wreck of the Invincible wrecked in 1758. Horsetail Sands. Eastern Solent Channel. UK, June 2017.
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Michel Roggo / Horsetails (Equisetum) Jiuzhaigou National Park, Jiuzhaigou Valley Scenic and Historic Interest Area UNESCO World Heritage Site, Sichuan, China. May 2013. Photographed for The Freshwater Project
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Orsolya Haarberg / Water Horsetails (Equisetum fluviatile) reflected in water, Femundsmarka National Park, Norway.
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Orsolya Haarberg / Water horsetail (Equisetum fluviatile) in the Femundsmarka National Park, Norway.
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Nick Upton / Dense stand of Great horsetail (Equisteum telmateia) spore cones emerging from canal bank, Bathampton, Bath and northeast Somerset, UK, March.
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Nick Upton / Stand of Great horsetail (Equisteum telmateia) spore cones emerging from canal bank, Bathampton, Bath and northeast Somerset, UK, March.
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Nick Upton / Stand of Great horsetail (Equisteum telmateia) spore cones emerging from canal bank, Bathampton, Bath and northeast Somerset, UK, March.
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SCOTLAND: The Big Picture / Eurasian beaver (Castor fiber) feeding on horsetail, Knapdale Forest, Argyll, Scotland, UK, June.
