John Shaw / Sally lightfoot crabs (Grapsus grapsus) on the beach at Puerto Egas, Santiago Island, Galapagos, May.
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Fabio Liverani / Freshwater Crab (Potamon fluviatile) in a shallow stream - split perspective showing crab beneath and fluvial habitat. Foreste Casentinesi National Park, Italy, July.
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Fabio Liverani / Freshwater Crab (Potamon fluviatile) brandishing claws in defensive posture. Foreste Casentinesi National Park, Italy, July.
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Fabio Liverani / Freshwater Crab (Potamon fluviatile) in a shallow stream - split perspective showing crab beneath and fluvial habitat. Foreste Casentinesi National Park, Italy, July.
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Fabio Liverani / Freshwater Crab (Potamon fluviatile) in a shallow stream - split perspective of underwater and habitat. Foreste Casentinesi National Park, Italy, July.
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Fabio Liverani / Freshwater crab {Potamon fluviatile} in Resina river, Umbria, Italy
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Fabio Liverani / Split level image of Freshwater crab {Potamon fluviatile} in Resina river, Umbria, Italy
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Robin Chittenden / River crab (Potamon potamios) on sand. Cyprus. April.
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Franco Banfi / Freshwater crab (Sylviocarcinus australis), Formoso River, Bonito, Mato Grosso do Sul, Brazil
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Franco Banfi / Freshwater crab (Sylviocarcinus australis), Formoso River, Bonito, Mato Grosso do Sul, Brazil
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Franco Banfi / Freshwater crab (Sylviocarcinus australis), Formoso River, Bonito, Mato Grosso do Sul, Brazil
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Magnus Lundgren / Wild Wonders of China / Large red crab in the river, Tangjiahe National Nature Reserve, Sichuan Province, China
