Mark Bowler / Silver arowana (Osteoglossum bicirrhosum) Amazonian fish occuring in Varzea flooded forests of the amazonian rainforest. These babies with their yolk sacks have been collected for the ornamental fish...

Mark Bowler / Silver arowana fish (Osteoglossum bicirrhosum) young fish are collected from the father fish who guards the young in his mouth and then released in a fish farm to grow until the price increases with d...

Mark Moffett / Herdsman Ant (Dolichoderus cuspidatus) queen surrounded by guards, marches along as the ants shift the site of their nest, Malaysia

Gavin Hellier / Mt Myohyang, International Friendship Exhibition, massive complex housing the world's gifts for the Great Leaders, Democratic Peoples' Republic of Korea (DPRK), North Korea 2012

Ann & Steve Toon / Anti-poaching patrol supported by Save the Rhino International, Mbirikani Group Ranch, Amboseli-Tsavo ecosystem, Chyulu Hills, Kenya, Africa, October 2012

Ann & Steve Toon / Armed anti-poaching patrol, Lewa Conservancy, Laikipia, Kenya, September 2012

Ann & Steve Toon / Armed anti-poaching patrol out in Lewa Conservancy, Laikipia, Kenya, September 2012

Ann & Steve Toon / White rhinoceros (Ceratotherium simum) carcass of animal poached for its horn, one week after killing, with security officer John Tanui, Lewa Conservancy, Laikipia, Kenya, September 2012

Ann & Steve Toon / Northern white rhino (Ceratotherium simum cottoni) female called Najin, watched over by armed guard, Ol Pejeta Conservancy, Laikipia, Kenya, Africa, September 2012

Ann & Steve Toon / Northern white rhino (Ceratotherium simum cottoni) male called Suni with female Najin, watched over by keepers Jeremy Kimathi and Peter Esogon, Ol Pejeta Conservancy, Laikipia, Kenya, Africa, Septembe...

Ann & Steve Toon / Northern white rhino (Ceratotherium simum cottoni) female called Najin, watched over by armed guard, Ol Pejeta Conservancy, Laikipia, Kenya, Africa, September 2012

Ann & Steve Toon / Northern white rhino (Ceratotherium simum cottoni) female called Najin, watched over by armed guard, Ol Pejeta Conservancy, Laikipia, Kenya, Africa, September 2012

Staffan Widstrand / Wilderness trail guide Artist Ngwetha, iMfolozi National Park, South Africa 2011

Staffan Widstrand / The anti poaching patrol, guards posing by vehicle. iMfolozi National Park, South Africa October 2011

Staffan Widstrand / The anti poaching patrol in action, walking across landscape, iMfolozi National Park, South Africa October 2011

Staffan Widstrand / The anti poaching patrol in action, iMfolozi National Park, South Africa October 2011

Staffan Widstrand / White rhinoceros (Cerathorium simum) watched by anti-poaching patrol of iMfolozi National Park, South Africa October 2011

Philippe Clement / Fossil guards of belemnites / Belemnitida from Lyme Regis taken on lightbox, Jurassic Coast, Dorset, UK

Philippe Clement / Fossil guards of belemnites on shingle beach near Lyme Regis along the Jurassic Coast, Dorset, UK

Mark Carwardine / Anti-poaching patrol guard with gun, Alaungdaw Kathapa National Park, north-western Burma (Myanmar)

Mark Carwardine / Anti-poaching patrol training at park headquarters, Alaungdaw Kathapa National Park, north-western Burma (Myanmar)

Mark Carwardine / Anti-poaching patrol guard with gun, Alaungdaw Kathapa National Park, north-western Burma (Myanmar)

Mark Carwardine / Guards on anti-poaching patrol at night, Preah Monivong Bokor National Park, Elephant Mountains, south-western Cambodia (formerly Kampuchea)

Mark Carwardine / Guards on anti-poaching patrol at night, Preah Monivong Bokor National Park, Elephant Mountains, south-western Cambodia (formerly Kampuchea)

Mark Carwardine / Guard on anti-poaching patrol in Preah Monivong Bokor National Park, Elephant Mountains, south-western Cambodia (formerly Kampuchea)

Mark Carwardine / Guard on anti-poaching patrol crossing river, Preah Monivong Bokor National Park, Elephant Mountains, south-western Cambodia (formerly Kampuchea)

Mark Carwardine / Guard on anti-poaching patrol sitting on hammock set up for overnight camp, Preah Monivong Bokor National Park, Elephant Mountains, south-western Cambodia (formerly Kampuchea)

Mark Carwardine / Anti-poaching patrol training at park headquarters, Alaungdaw Kathapa National Park, north-western Burma (Myanmar)

Nick Upton / Horse Guards parading on The Mall, past avenue of London Plane Trees (Platanus x hispanica), with Buckingham Palace in the background, London, UK, May. 2012

Chien Lee / Safari Ant (Dorylus laevigatus) guards protecting workers removing flesh off animal carcass, Sarawak, Borneo, Malaysia

Chien Lee / Safari Ant (Dorylus laevigatus) guards protecting workers removing flesh off animal carcass, Sarawak, Borneo, Malaysia

Mark Hamblin / 2020VISION / Scots pine saplings (Pinus sylvestris) with protective tree guards to prevent grazing by deer, part of Caledonian pine forest regeneration scheme, Cairngorms NP, Scotland, UK, July 2011

Mark Hamblin / 2020VISION / Scots pine saplings (Pinus sylvestris) with protective tree guards to prevent grazing by deer, part of Caledonian pine forest regeneration scheme, Cairngorms NP, Scotland, UK, July 2011

Christian Ziegler / Green Tree Ant (Oecophylla smaragdina) guards protecting colony, Lambir Hills National Park, Sarawak, Malaysia

JEFF FOOTT / Men in the Anti-poaching patrol protecting the Indian / Asian rhinoceros (Rhinoceros unicornis) in Chitwan NP, Nepal, 2003

JEFF FOOTT / Skins of poached animals - tiger, snake, leopard -confiscated by the Rhino Protection Unit in Tikoli, near Chitwan NP, Nepal, 2003

Florian Möllers / Member of the Snare Removal Unit at Budongo Conservation Field Station removes snare set for duikers and bush pig that could seriously harm or mutilate chimpanzees which might accidentially get caug...

Nick Upton / RNLI surf lifeguards on duty at Polzeath beach, watching surfers in waves. Cornwall, UK, April 2010.

Steven David Miller / Australian Wood / Maned Goose (Chenonetta jubata)female guards her ducklings beside a flooded field in early spring. Hervey Bay, Queensland, Australia

Suzi Eszterhas / Poachers apprehended by Mara Conservancy anti-poaching patrol rangers, Caught with wildebeest and impala meat, Serengeti National Park, Tanzania, August 2006

Suzi Eszterhas / Mara Conservancy ranger undergoing a training course set up by security consultant, Ridgeback, Inc., Masai Mara Conservancy, Kenya, October 2006

Suzi Eszterhas / Security consultant (Ridgeback, Inc.) assisting in rifle cleaning and safety checks for Mara Conservancy rangers, Masai Mara Conservancy, Kenya, October 2006

Suzi Eszterhas / Rifles belonging to rangers of the Mara Conservancy Masai Mara Conservancy, Kenya, October 2006

Stephen Dalton / Orb weaver spider (Agalenatea redii) guards its egg sac on plant stem, UK

Mark Bowler / Silver arowana fish (Osteoglossum bicirrhosum) young fish are collected from the father fish who guards the young in his mouth and then released in a fish farm to grow until the price increases with d...

Mark Bowler / Silver arowana fish (Osteoglossum bicirrhosum) young fish are collected from the father fish who guards the young in his mouth and then released in a fish farm to grow until the price increases with d...

Mark Moffett / Driver Ant (Dorylus nigricans) trail guards in defensive position, Ghana

Kristel Richard / A traditionally dressed farmer guards a group of four Kathiawari mares and fillies grazing in a field, Jasdan, Gujarat, India. 2008

Eric Baccega / Guards cutting a trail through the dense rainforest vegetation, habitat of the Mountain gorilla, Virunga National Park, Democratic Republic of Congo, Africa, March 2009

Eric Baccega / Soldiers watching men playing chess at refugee camp Mugunga 1, west of Goma, North Kivu, Democratic Republic of Congo, Africa, March 2009

Eric Baccega / Daily briefing for the Guards at the Volcanoes National Park, home of the Mountain gorilla, Rwanda, Africa, March 2009

Eric Baccega / Daily briefing for the Guards at the Volcanoes National Park, home of the Mountain gorilla, Rwanda, Africa, March 2009

Andy Rouse / Lead Asian elephant of parade decorated with gold tusk guards and outfit, Perehera Religous Festival, Sri Lanka

Inaki Relanzon / Children and guards at a party to celebrate the 5th of June, World Environment Day, Manerinerina, Majunga, Madagascar.

Eric Baccega / Guards capturing Peruvian boa (Boa constrictor ortonii) Chaparri Ecological Reserve, Peru, South America

Eric Baccega / Team of guides and guards protecting the Mountain gorillas in Volcanoes National Park, Rwanda, Africa

Mark Moffett / Marauder Ant (Pheidologeton diversus), minor worker trail guards facing aggressive Army Ants (Leptogenys sp), Borneo

Pete Oxford / Peoples Armed Police Guard on duty at Tiananmen Square, Beijing, China 2006

Nick Upton / Female Tortoise beetle guards eggs (Acromis sparsa) Panama

Duncan Mcewan / Parent Bug guards newly hatched nymphs (Elasmucha grisea) on Birch leaf, July, UK

Ingo Arndt / Researcher wearing leg guards as protection from poisonous snakes Santa Rosa National Park, Costa Rica

Piotr Naskrecki / Army Ant (Eciton hamatum) motionless soldier guards an endless stream of workers leaving the bivouac, Costa Rica

Piotr Naskrecki / Ponerine Ant (Ectatomma tuberculatum) guards a nectar filled flower of Firebush (Hamelia patens), Costa Rica

Piotr Naskrecki / Arboreal Crab (Malagasya antongilensis) guards a tree hole in a remote forest of northern Madagascar

Jabruson / National Park warden with machine gun carrying African elephant ivory {Loxodonta africana} from poached / dead elephants, Garamba NP, Congo

Jabruson / Guards riding domesticated African elephants {Loxodonta africana} Garamba NP, Congo

Anup Shah / Child stroking juvenile chimpanzee {Pan troglodytes} with Sanctuary handlers, Sweetwater Sanctuary, Kenya

James Aldred / Members of the Wildlife Conservation Society anti-poaching patrol team relaxing with their AK47 and rifle guns beside them, Dzanga-Sanga Bai, Bayanga, Central African Republic, 2003

Jabruson / Destruction of bamboo snare by Park ranger, protecting Mountain gorillas {Gorilla beringei} Virunga NP, Democratic Republic of Congo (formerly Zaire)

Jabruson / Camel anti-poaching unit on patrol, Meru NP, Kenya

Jabruson / Park warden destroys snare set for antelope, bushmeat practice, Virunga NP, Democratic Republic of Congo (formerly Zaire), Central Africa

Toby Sinclair / Valmik Thapar (with beard) and Fateh Singh in jeep at Rajbagh, Ranthambhore NP, Rajasthan, India (Television presenter and previous head of park and Project Tiger)

Ian Lockwood / Forest guard ooking out across canyon, with tropical rainforest stretching below, Balpakram NP, Meghalaya, North East India

Jabruson / Domesticated African elephants (Loxodonta africana) ridden by forest guards on patrol at sunset, Garamba NP, Democratic Republic of Congo

Jabruson / Domesticated African elephants (Loxodonta africana) ridden by forest guards on patrol, Garamba NP, Democratic Republic of Congo

GEORGETTE DOUWMA / Red Sea / Two-bar anemonefish (Amphiprion bicinctus) guards egg patch on rock next to host anemone. Egypt, Red Sea.

Eric Baccega / Rangers examine a Black bear {U americanus} den site, Parc National de la Mauricie, Canada.

Eric Baccega / Rangers examine a Black bear {Ursus americanus} den site, Parc National de la Mauricie, Canada.

Mark Payne-Gill / Game wardens on elephant, Anti rhino and tiger poaching patrol, Kaziranga NP, Assam.

Toby Sinclair / Forest guards on patrol in Kaziranga National Park, Assam, India

PREMAPHOTOS / Sawfly female guards her eggs on leaf {Themos olfersii} Campo cerado, Brazil

PREMAPHOTOS / Male Weevil guards smaller female as she drills into bark with her rostrum prior to egg laying {Mecopus torquis} Uganda

PREMAPHOTOS / Ornate orb weaver spider male guards larger female from rival (Herennia ornatissima) Sumatra

PREMAPHOTOS / Parent Bug (Elasmucha grisea) guards her brood as they feed on Birch tree catkin.

PREMAPHOTOS / Carpenter bee male patrolling territory (Xylocopa sp.) Kenya, Africa - guards its territory round bush.

PREMAPHOTOS / Female Tortoise beetle guards her larvae (Acromis spinifex) Trinidad

Michael & Patricia Fogden / Treehoppers, adult and several ages of young plus ant guards, dry forest, Guanacaste, Costa Rica

Mark Moffett / Stag Fly (Phytalmia cervicornis) mated female unsheathes her ovipositor to lay eggs while, the male guards and watches, Papua New Guinea

Mark Moffett / Ants together with the plant's spines guards a Rattan Palm, Singapore

Mark Moffett / Marauder Ant (Pheidologeton diversus) group carrying earthworm back to nest, with two minor workers riding on prey as guards, Malaysia

Bernard Castelein / Forest guards starting fires to stimulategrowth of Elephant grass Kaziranga NP, Assam, India

Sue Daly / Lumpsucker male guards eggs {Cyclopterus lumpus} Jersey, Channel Isles, UK Bouley Bay

Pete Oxford / Ancient ruins of Guards' houses Machu Picchu Peru

Adrian Davies / Tree guards to protect young trees from deer. UK

Martha Holmes / 13th century granite tortoise guards ancient city of Karakorum, Mongolia

Anup Shah / Park wardens riding Indian elephant {Elephas maximus} Kaziranga NP, Assam, India