Phil Savoie / Blue tit (Cyanistes caeruleus) bringing Crab spider (Misumena vatia) prey to nest, Monmouthshire Wales, UK, May.
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Alex Mustard / RF - Portrait of Coral hermit crab (Paguritta harmsi) living in a hard coral colony. North Male Atoll, Maldives. Indian Ocean (This image may be licensed either as rights managed or royalty free.)
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Nick Upton / Juvenile Goldenrod spider (Misumena vatia) camouflaged on a Common hogweed (Heracleum sphondylium) flowerhead, reacting to and catching a fly (Muscidae), Wiltshire, England, UK, June.
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John Chan / Crenulated fiddler crab (Uca crenulata) waving its major claw at another crab, part of a courtship display, Southern California, USA, June.
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John Chan / Crenulated fiddler crab (Uca crenulata) feeding on detritus, Southern California, USA, June.
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John Shaw / Sally lightfoot crabs (Grapsus grapsus) on the beach at Puerto Egas, Santiago Island, Galapagos, May.
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Andy Rouse / Sally lightfoot crab, (Grapsus grapsus), feeding on marine iguana parasites and dead skin, Galapagos
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Georgette Douwma / Boxer Crab (Lybia tessellata) with sea anemones in its claws for defense. Lembeh Strait, North Sulawesi, Indonesia.
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Nick Hawkins / European green crab (Carcinus maenas), an invasive species in North America, Kejimkujik Seaside National Park, Nova Scotia, Canada. July.
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Steven David Miller / Sand bubble patterns created by Sand bubbler crabs (Scopimera inflata), Cape Hillsborough National Park, Queensland, Australia. September.
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Shane P. White / Coconut Crab (Birgus latro) on palm tree, Espiritu Santo, Vanuatu