Roberto Rinaldi / Elbow crab (Harrovia elegans) on a crinoid feather star (Crinoidea), Sulawesi, Indonesia.
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David Fleetham / Horrid elbow crab (Daldorfia horrida) Raja Ampat, Indonesia.
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Francisco Marquez / Triangle elbow crab (Parthenope triangula) on white background, Islas Marias Archipelago, Marias Biosphere Reserve, Mexico.
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Ingo Arndt / Web invading spider {Argyrodes trigonum} Florida, USA.
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Ingo Arndt / Web invading spider {Argyrodes trigonum} Florida, USA.
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Ingo Arndt / Web invading spider {Argyrodes trigonum} Florida, USA.
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Ingo Arndt / Web invading spider {Argyrodes trigonum} Florida, USA.
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Tony Wu / Joro spider (Nephilia clavata) female a type of golden silk orb-weaver spider common in Japan during the autumn. With the spider's chelicerae, or jaws, clearly visible. These deliver a neurotoxin simi...