Alex Mustard / Spotted porcupinefish (Diodon hystrix) swimming in open water above a coral reef, West Bay, Grand Cayman, Cayman Islands, British West Indies, Caribbean Sea.
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Peter Blackwell / Back view of Crested porcupine {Hystrix cristata} walking away, Central Kenya
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Alex Mustard / Thorny seahorse (Hippocampus hystrix) female is camouflaged within sponges, growing in shallow water, Bima Bay, Sumbawa, Indonesia, Flores Sea.
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Alex Mustard / Thorny seahorse (Hippocampus hystrix) female swimming past a crinoid, Bima Bay, Sumbawa, Indonesia, Flores Sea.
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Sebastian Kennerknecht / Indian Crested Porcupine (Hystrix indica) at night, Hawf Protected Area, Yemen
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Sebastian Kennerknecht / Indian Crested Porcupine (Hystrix indica) at night, Hawf Protected Area, Yemen
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Tony Phelps / African / Cape crested porcupine (Hystrix africaeaustralis) released from leopard trap, DeHoop NR, Western Cape, South Africa, December
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Pete Oxford / Porcupine fish (Diodon hystrix) Bonaire, Netherlands Antilles, Caribbean
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Mark Jones / Crested Porcupine (Hystrix cristata) digging, Laikipia, Kenya
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Jeff Rotman / Spiny / thorny sea horses (Hippocampus hystrix) attached to eel grass, East Australia, Pacific Ocean.
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Nature Production / African Crested Porcupine (Hystrix cristata) mother and young, captive, Tobu Zoo, Saitama, Japan
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Nature Production / African Crested Porcupine (Hystrix cristata) young, captive, Tobu Zoo, Saitama, Japan
Juergen Freund / Thorny seahorse (Hippocampus hystrix) hiding by a similarly-coloured sponge. Lembeh Strait, North Sulawesi, Indonesia.
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Juergen Freund / RF- Thorny seahorse (Hippocampus hystrix) gripping a sponge with its tail. Lembeh Strait, North Sulawesi, Indonesia. (This image may be licensed either as rights managed or royalty free.)
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Alex Mustard / A young Thorny Seahorse (Hippocampus hystrix) hides in the "arms" of a feather star (Crinoid). Tulamben, Bali, Indonesia, Java Sea, September.
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Juergen Freund / Thorny seahorse (Hippocampus hystrix) well hidden amongst seagrass. Lembeh Strait, Sulawesi, Indonesia
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Juan Manuel Borrero / Selling Catfish / Carachama (Acanthicus hystrix) Market of Belen. Iquitos. Loreto. Peru October 2009
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Fabio Liverani / Woman walking her two domesticated Crested Porcupines (Hystrix cristata) along a road, Sri Lanka. June 2010
Tim Laman / Bluestreak cleaner wrasse (Labroides dimidiatus) cleaning a Spotted Porcupinefish (Diodon hystrix) on a coral reef in Bali, Indonesia.
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Thomas Marent / Malayan Porcupine (Hystrix brachyura), Thailand
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Thomas Marent / Malayan Porcupine (Hystrix brachyura) walking at night, Thailand
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Thomas Marent / Malayan Porcupine (Hystrix brachyura) walking at night, Thailand
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David Shale / Amphipod {Paramphithoe hystrix} benthic, Barents sea, Northern Europe
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David Shale / Amphipod {Paramphithoe hystrix} benthic, Barents sea, Northern Europe
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Jeff Rotman / Porcupinefish (Diodon hystrix) close-up of spines. Egypt, Red Sea.
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Matthew Maran / Captive White Tailed Porcupine {Hystrix indica} roadside show for passing tourists, near Sigiriya, Sri Lanka
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Rod Williams / African crested porcupine {Hystrix cristata} captive, from Africa
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Rod Williams / Cape crested porcupine {Hystrix africaeaustralis} captive, from Southern Africa
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Michael Pitts / Common short tailed porcupine {Hystrix brachyura} foraging in litter, Flores, Indonesia
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Michael Pitts / Common short tailed porcupine {Hystrix brachyura} foraging in litter, Flores, Indonesia
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Jabruson / Confiscated tusks of African Forest elephants damaged by Crested porcupine {Hystrix cristata} Odzala NP, Congo Rep
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Michael Pitts / Common short tailed porcupine {Hystrix brachyura} foraging in litter, Flores, Indonesia
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Michael Pitts / Common short tailed porcupine {Hystrix brachyura} at water's edge, Flores, Indonesia
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Michael Pitts / Common short tailed porcupine at waters edge {Hystrix brachyura} Flores, Indonesia
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GEORGETTE DOUWMA / Black-spotted porcupinefish {Arothron hystrix} Lembeh Strait, North Sulawesi, Indonesia.
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GEORGETTE DOUWMA / Black-spotted porcupinefish {Arothron hystrix} lying next to Ceranthid anemone, Lembeh Strait, North Sulawesi, Indonesia.
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GEORGETTE DOUWMA / Black-spotted porcupinefish {Arothron hystrix} Lembeh Strait, North Sulawesi, Indonesia.
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GEORGETTE DOUWMA / Black-spotted porcupinefish {Arothron hystrix} lying next to Ceranthid anemone where shrimps have set up a cleaning station. Lembeh Strait, North Sulawesi, Indonesia.
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Doug Perrine / Diver with inflated Porcupine fish {Diodon hystrix} Florida, USA.
Peter Blackwell / Crested porcupine {Hystrix cristata} Central Kenya
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Jabruson / Porcupine fish {Diodon hystrix} made into tourist curio for sale on Sal Is, Cape Verde Islands
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Tony Heald / Porcupine walking {Hystrix africaeaustralis} Damaraland, Namibia
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Tony Heald / Porcupine portrait {Hystrix africaeaustralis} Damaraland, Namibia
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Tony Heald / Porcupine at water {Hystrix africaeaustralis} Damaraland, Namibia
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Tony Heald / Porcupine drinking {Hystrix africaeaustralis} Damaraland, Namibia
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Peter Blackwell / Crested porcupine {Hystrix cristata} foraging on ground, Central Kenya, Africa
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Jeff Rotman / Bird's nest coral {Seriatopora hystrix} Red Sea
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Jeff Rotman / Porcupine fish close-up of spines {Diodon hystrix} Red Sea
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Paul D Stewart / Woodcut illustration of Crested Porcupine (Hystrix cristata) with colouring. From Gesner's 'Icones Animalium' publ. Christof Froschover, Zurich, 1560. Of Gesner's many woodcuts this is one of the more...
