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.
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Nick Upton / Two Montagu's crabs (Xantho hydrophilus) competing for a crevice to hide in within a rockpool, with a young Velvet swimming crab (Necora puber) moving away nearby, Cornwall, England, UK, September.
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Nick Upton / Two Montagu's crabs (Xantho hydrophilus) competing for a crevice to hide in within a rockpool, Cornwall, England, UK, September.
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Nick Upton / Montagu's crab (Xantho hydrophilus) moving behind a stone in a rockpool to hide in a rockpool low on the shore, near Falmouth, Cornwall, England, UK, September.
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Constantinos Petrinos / Mosaic boxer crab (Lybia tesselata) female carrying its red eggs Lembeh Strait, North Sulawesi, Indonesia
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Constantinos Petrinos / Juvenile mosaic reef crab (Lophozozymus pictor) Lembeh Strait, North Sulawesi, Indonesia.
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Linda Pitkin / Mosaic reef crab (Lophozozymus pictor), on the reef at night Aljui Bay, Raja Ampat, West Papua, Indonesia.
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Pascal Kobeh / Boxer / Pompom crab (Lybia tessellata) holding its eggs on hard coral, Manado, Indonesia. Sulawesi Sea.
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Pascal Kobeh / Boxer / Pompom crab (Lybia tesselata) with eggs underneath, Manado, Indonesia. Sulawesi Sea.
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Sue Daly / Montagu's or Furrowed Crab (Xantho hydrophilus) on sea shore, Sark, British Channel Islands.
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Sue Daly / Risso's crab (Xantho pilipes) on sea shore, Guernsey, British Channel Islands.
