John Shaw / Sally lightfoot crabs (Grapsus grapsus) on the beach at Puerto Egas, Santiago Island, Galapagos, May.
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David Fleetham / Sea urchin crab (Echinoecus pentagonus), female inside Common banded urchin (Echinothrix calamaris) rectum. Hawaii.
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Alex Mustard / Poisonous spines of Magnificent fire urchin (Asthenosoma ijimai) with Zebra urchin crab (Zebrida adamsii) sheltering, Anilao, Batangas, Luzon, Philippines. Verde Island Passages, Tropical West Pacific...
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Sue Daly / Hairy Crab (Pilumnus hirtellus) on seaweed on the beach, Sark, British Channel Islands.
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Franco Banfi / Urchin crabs (Zebrida adamsii) in Fire urchin (Asthenosoma varium) Raja Ampat, Irian Jaya, West Papua, Indonesia, Pacific Ocean
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David Fleetham / Zebra urchin crab (Zebrida adamsiiname) camouflaged, sitting on a crinoid, Yap, Micronesia, Pacific Ocean.
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David Fleetham / Female Sea urchin crab (Echinoecus pentagonus) living in the rectum of the Common banded urchin, (Echinothrix calamaris), Hawaii, Pacific Ocean.
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David Fleetham / A female Sea urchin crab (Echinoecus pentagonus) on the underside of a Panamic starfish (Pentaceraster cumingi), Hawaii.
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Nick Upton / Hairy crab (Pilumnus hirtellus) among seaweed fronds in a rock pool, The Gower, Wales, UK, August.
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Nick Upton / Hairy crab (Pilumnus hirtellus) among seaweed fronds in a rock pool, The Gower, Wales, UK, August.
