Bertie Gregory / 2020VISION / Young red fox (Vulpes vulpes) infront of security car, urban park, Bristol, winter.

Juergen Freund / Blue linkia starfish (Linckia laevigata) pair attached to the dead part of coral, New Ireland, Papua New Guinea

Paul Hobson / Mute swan (Cygnus olor) looking out from between feathers, Dorset, UK

Ann & Steve Toon / Confiscated poisoned arrows used in elephant poaching, Mbirikani group ranch, Chyulu Hills, Amboseli-Tsavo ecosystem, Kenya, October 2012

Ann & Steve Toon / Big Life ranger demonstrating poisoned arrow used in elephant poaching, Mbirikani group ranch, Chyulu Hills, Amboseli-Tsavo ecosystem, Kenya, October 2012

Ann & Steve Toon / Black rhinoceros (Diceros bicornis) orphaned calf with security officer John Tanui at Lewa Wildlife Conservancy, Laikipia, Kenya, Africa, September 2012

Ann & Steve Toon / Member of the Rhino patrol, partly funded by Save the Rhino international, looks out using binoculars, Lewa Conservancy, Laikipia, Kenya, September 2012

Ann & Steve Toon / Black rhinoceros (Diceros bicornis) orphaned calf with security officer John Tanui at Lewa Wildlife Conservancy, Laikipia, Kenya, Africa, September 2012

Ann & Steve Toon / Remote tracking of Rhino patrols via digital radio, screenshot, Lewa Conservancy, Laikipia, Kenya, September 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 / African elephants (Loxodonta africana) screen showing remote tracking via GPS radiocollars, screenshot, Lewa Conservancy, Laikipia, Kenya, September 2012

Ann & Steve Toon / Senior radio operator John Tanui, radio control room, Lewa Conservancy, 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

John Cancalosi / Raccoon (Procyon lotor) in tree hole, New York, USA

Juergen Freund / Floating cages for Coral trout (Plectropomus leopardus) with solar powered light for night security to protect from poachers, Live Reef Fish Trade, Palawan, Philippines, May 2009.

Roger Powell / Oystercatcher (Haematopus ostralegus) incubating in a "nest box" placed in a bay of Porsanger fjord. These nest boxes were originally used to provide a supply of eggs for food to local inhabitants, bu...

Bryan and Cherry Alexander / Dog handler with Domestic dog / Jackal cross, trained to detect explosives at Sheremetyevo Airport, Moscow, Russia, 2005.

Bryan and Cherry Alexander / Dog handler with Domestic dog / Jackal cross, trained to detect explosives at Sheremetyevo Airport, Moscow, Russia, 2005.

Bryan and Cherry Alexander / Dog handler with Domestic dog / Jackal cross, trained to detect explosives at Sheremetyevo Airport, Moscow, Russia, 2005.

Bryan and Cherry Alexander / Dog handler with domestic dog / Jackal cross, trained to detect explosives at Sheremetyevo Airport, Moscow, Russia, 2005.

Aflo / N-0605 up tree trunk into canopy, Japan.

Aflo / N-0702 of broadleaf tree in leaf, Japan.

Aflo / N-0701 Large ancient Beech tree {Fagus sp}, Tateyama, Toyama, Japan.

Kristel Richard / The Garde Républicaine (Republican Guard), part of the French Gendarmerie, mounted on Selle Français horses, demonstrate how they maintain security in the streets of Paris, Caserne des Célestins, P...

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

Juan Carlos Munoz / Black howler monkey (Alouatta caraya) baby being carried by mother, Pantanal NP, Mato Grosso, Brazil

Robert Valentic / Rusty topped delma legless lizard {Delma borea} leaves the security of dense Hummock grass to hunt insects at night, East Kimberley, Western Australia

Richard Du Toit / Spotted hyaena pup peering over mother's back {Crocuta crocuta} Sabi-sands GR, South Africa

Onne van der Wal / Boats moored in Hout Bay Harbour in Zeekoevlei, Cape Town, South Africa.

Ingo Arndt / People checking vegetables in bio-security room at King Edward Point for South Georgia Heritage Trust Rat Eradication Project, South Georgia Island

Mitsuaki Iwago / Domestic Dog (Canis familiaris) with security guard