Michel Roggo / Watermilfoil (Myriophyllum spicatum) with some stems supporting clusters of Zebra mussel (Dreissena polymorpha) Lake Neuchatel, Switzerland. Highly commended in the Plants category of the Wildlife Pho...
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Alex Mustard / 2020VISION / Colony of Zebra mussels (Dreissena polymorpha) in flooded quarry, a non-native, invasive species, Stoney Cove, Stoney Stratford, Leicestershire, UK, December
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Robert Thompson / Zebra Mussels {Dreissena polymorpha} Lower Lough Erne, County Fermanagh, Northern Ireland, UK
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Robert Thompson / Zebra Mussels {Dreissena polymorpha} Lower Lough Erne, County Fermanagh, Northern Ireland, UK
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Willem Kolvoort / Moss animals (Cristatella mucedo), Zebra mussel (Dreissena polymorpha) and Ramshorn snail (Planorbidae), all on submerged branch, peat bog lake, Holland
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Willem Kolvoort / Underwater mass of Zebra mussels (Dreissena polymorpha) in sand winning pit, Holland
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Willem Kolvoort / A big Zebra mussel (Dreissena polymorpha) with a lot of young mussels around it, maybe offspring, sand winning pit, Holland
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Willem Kolvoort / Underwater branches covered in Zebra mussels (Dreissena polymorpha) sand winning pit, Holland
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Willem Kolvoort / Swan mussel (Anodonta cygnaea) with Zebra mussel (Dreissena polymorpha) attached to left side, sand winning pit, Holland
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Willem Kolvoort / Zebra mussels (Dreissena polymorpha) feeding in a canal, Zwolle, Holland
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Willem Kolvoort / Zebra mussels {Dreissena polymorpha} attached to aquatic plants, Lough Keye, Republic of Ireland
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Willem Kolvoort / Zebra mussels {Dreissena polymorpha} one adult and several young filter feeding, Holland.