Georgette Douwma / Boxer Crab (Lybia tessellata) with sea anemones in its claws for defense. Lembeh Strait, North Sulawesi, Indonesia.
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Nick Upton / Common prawns (Palaemon serratus) and a Rock goby (Gobius paganellus) feeding on a dead Montagu's crab (Xantho hydrophilus) in a rockpool, Cornwall, England, UK, September.
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Magnus Lundgren / Wild Wonders of China / Boxer crab (Lybia tessellata) carrying a sea anemone around in each of its claws, Xiaoliuqiu Island, Taiwan
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Alex Mustard / Close up of a tiny Boxer crab (Lybia tessellata) as it waves the stinging anemones it holds in its claws for defence. Tulamben, Bali, Indonesia. Java Sea.
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Nick Upton / Montagu's / Furrowed crab (Xantho hydrophilus) from English Channel. South Devon, England, UK. September.
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David Fleetham / Splendid round crab (Etisus splendidus) holding pieces of coral that it has broken off with its lobed claws. Philippines.
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Sue Daly / Risso's crab (Xantho pilipes) Sark, British Channel Islands, September.
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Nick Upton / Common prawns (Palaemon serratus) feeding on a dead Montagu's crab (Xantho hydrophilus) in a rockpool, Cornwall, England, UK, September.
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Nick Upton / Common prawns (Palaemon serratus) feeding on a dead Montagu's crab (Xantho hydrophilus) in a rockpool, Cornwall, England, UK, September.
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Nick Upton / Common prawns (Palaemon serratus) and a Shanny (Lipophrys pholis) feeding on a dead Montagu's crab (Xantho hydrophilus) in a rockpool, Cornwall, England, UK, September.
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Nick Upton / Common prawns (Palaemon serratus) feeding on a dead Montagu's crab (Xantho hydrophilus) in a rockpool, with a a Rock goby (Gobius paganellus) swimming past, Cornwall, England, UK, September.
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Nick Upton / Montagu's crab (Xantho hydrophilus) in a rockpool, showing threat posture with open claws raised, walks out of frame, Cornwall, England, UK, September.