Steve O. Taylor (GHF) / Guide taking in view of escarpment, Mali, 2005-2006.

Christophe Courteau / Tourists and guide using snowshoes on an ecotourism trekking holiday, Svalbard, Norway, June, 2012. Model released.

Oriol Alamany / Portrait of a South African Parks Ranger whilst supervising a walking safari, Kruger National Park, Transvaal, South Africa, September 2008. No release available.

Claudio Contreras / Guide in front of prehistoric rock paintings of Bighron sheep and people. La Pintada cave, San Francisco Sierra, El Vizcaino Biosphere Reserve, Baja California Peninsula, Mexico.

Claudio Contreras / Guide sitting beneath prehistoric rock painting. El Palmarito cave, Santa Martha Sierra, El Vizcaino Biosphere Reserve, Baja California Peninsula, Mexico. 2008.

Claudio Contreras / Guide looking at prehistoric rock painting. El Palmarito cave, Santa Martha Sierra, El Vizcaino Biosphere Reserve, Baja California Peninsula, Mexico. 2008.

Cyril Ruoso / Bare feet of local guide, Anja Community Reserve, Madagascar. 2018.

Staffan Widstrand / African bush elephant, (Loxodonta africana) with guide holding hand up to stop it. Zimanga Private Nature Reserve, KwaZulu Natal, South Africa

Staffan Widstrand / African Wild Dog / Painted Dog, (Lycaon pictus) together with guide Dean Wraith, at Zimanga Private Nature Reserve, KwaZulu Natal, South Africa

Heather Angel / Broomrape (Pedicularis longiflora) in wet meadow amongst Horsetail (Equisetum sp). Maroon marks on flowers act as Nectar guides. Road from Barkham to Ruo Er Gai, Sichuan Province, China. July.

Heather Angel / Seep monkey flower (Mimulus guttatus), bifid stigma above stamens. Nectar spot guides and central groove leading pollinators to nectar. Focus stacked.

Heather Angel / Prophet flowers (Arnebia pulchra) with dark spots that act as nectar guides. Caucasus, Russia. June.

Heather Angel / Balsam (Impatiens rosulata) with yellow nectar guides. Endemic to Kitulo Plateau, Tanzania.

Heather Angel / Chilean monkey flower (Mimulus naiandinus). The lower lip has a groove to guide the pollinator's proboscis to the nectar source, with red spots acting as nectar guides. Cultivated in garden, Surre...

Heather Angel / Spiderplant (Cleome hirta) flowerhead.Patterns on two banner petals serve as nectar guides. Tanzania.

Heather Angel / Gold band lily (Lilium auratum) flower. Yellow nectar guides lead pollinators to nectaries. Pollinators are swallowtail butterflies and hawkmoths. Cultivated in garden, Surrey, England, UK. Native to...

Heather Angel / Ivy leaved toadflax (Cymbalaria muralis) flowers with orange nectar guides. Surrey, England, UK. April.

Heather Angel / Gold band lily (Lilium auratum) with yellow nectar guides. In cultivation. Native to Japan.

Heather Angel / Lisbon false sun-rose / Yellow rock rose (Halimium lasianthum) flowers. Blotch at base of petals guides pollinators to nectar source.

Heather Angel / Afghanistan Juno iris (Iris cycloglossa) with yellow nectar guides. In cultivation, Kew Gardens, London, England, UK. Native to Afghanistan.

Heather Angel / Common toadflax (Linaria vulgaris), orange nectar guides on lower lip and long spur containing nectar. Surrey, England, UK. Focus stacked.

Heather Angel / Large-flowered evening primrose (Oenothera glazioviana). Bull's eye in centre of flower fluorescing in UV light guides pollinators to nectaries. At night in garden. Surrey, England, UK.

Heather Angel / Foxglove (Digitalis purpurea) corollas with spatter mark nectar guides. Pollinated by long tongued bumblebees able to reach nectar. Long guard hairs said to prevent small insects from entering, could...

Heather Angel / Foxglove (Digitalis purpurea), blue nectar guides and anthers, pollen and stigma fluorescing in UV light. Focus stacked.

Heather Angel / Southern catalpa (Catalpa bignonioides) flowers. Recently opened with yellow nectar guides, purple in older pollinated flowers. Surrey, England, UK. Native to USA.

Heather Angel / Yellow mariposa lily (Calochortus luteus) with dark nectar guides. Cultivated in glasshouse, Surrey, England, UK. Endemic to California.

Suzi Eszterhas / Sumatran Orangutan Society staff running a training session for local guides. North Sumatra, Indonesia.

David Fleetham / Diver looking at underwater fish identification chart in front of schooling Raccoon butterflyfish (Chaetodon lunula) and a lava formation. Lanai, Hawaii. July 2012. Model released.

Magnus Lundgren / Wild Wonders of China / Two guides looking at photographs taken on camera whilst sitting on forest floor. Wuliangshan Nature Reserve, Jingdong, Yunnan Province, China. October 2017.

Magnus Lundgren / Wild Wonders of China / Guide to Mount Wuliang Nature Reserve sitting. Wuliangshan Nature Reserve, Jingdong, Yunnan Province, China.

Staffan Widstrand / Wild Wonders of China / Ecotourism Guide at Tongbiguan Nature Reserve, Dehong prefecture, Yunnan province, China. May

Eric Baccega / Team of guides, guards and trackers for Moutain gorillas (Gorilla beringei beringei) at the Virunga National Park, North Kivu, Democratic Republic of Congo, Africa, December 2017.

Michel Roggo / Split level view of the Temnik River with the guides in the background, Temnik River, Baikal Nature Reserve, Buryatia, Siberia, Russia, May 2015.

Francois Savigny / Mahouts sheltering from rain on top of Indian elephants {Elephas maximus} Bandhavgarh NP, India. Domesticated elephants used to track and take tourists to view wild tigers on within park.

David Tipling / Forest guide Isaac Pizarro imitating the call of a Harpy Eagle, Darien National Park UNESCO World Heritage Site, Panama. February 2017.

David Tipling / Man on canoe in the Chucunaque River at dawn in search of the Harpy Eagle, Darien National Park UNESCO World Heritage Site, Panama. February 2017.

Tim Laman / Bird of Paradise Researcher Edwin Scholes and guide Untu look over the alpine forest. Lake Habbema with, Puncak Trikora , Papua, New Guinea, June.

Wild Wonders of Europe / Widstrand / Mountain guide Umberto Esposito standing with hiking poles, Central Apennines Rewilding area, Italy, November 2013.

Eric Baccega / Tourists watching as guide explains the rule to stay at least 7 metres distance from Gorillas, Bwindi Impenetrable Forest, Uganda, February 2016.

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

Cheryl-Samantha Owen / Tortilis Camp guide, Johnathan, looking out from small hill. Amboseli National Park, Kenya.

Cheryl-Samantha Owen / Joel Cheruiyot, Tortilis Camp guide looks for wildlife with his binoculars. Amboseli National Park, Kenya.

Eric Baccega / Photographer Eric Baccega with his guide in the desert, Danakil depression, Afar region, Ethiopia, March 2015.

Steve O. Taylor (GHF) / Photographer Steve O Taylor with guide filming elephants near waterhole, aggressive bull African elephant (Loxodonta africana). Bwabwata Conservancy, Namibia.

Steve O. Taylor (GHF) / Photographer Steve O Taylor with park rangers, Bwabwata Conservancy, Namibia.

Pete Oxford / Guide paddling canoe in Lekoli River, Republic of Congo (Congo-Brazzaville), Africa, June 2013.

Pete Oxford / Wilderness Safari guide Stephanie Courtines looking through binoculars in forest, Ngaga, Republic of Congo (Congo-Brazzaville), Africa, June 2013.

Pete Oxford / Wilderness Safari guide Stephanie Courtines in forest, Ngaga, Republic of Congo (Congo-Brazzaville), Africa, June 2013.

Pete Oxford / Norbert, local Wilderness Safari Pygmy guide, in forest. Ngaga, Republic of Congo (Congo-Brazzaville), Africa, June 2013.

Pete Oxford / Guide paddling canoe in Lekoli River, Republic of Congo (Congo-Brazzaville), Africa, June 2013. Not available for book covers until 2026

Steve O. Taylor (GHF) / Guides in desert near Guilemsi, Mauritania, 2004.

Steve O. Taylor (GHF) / Guide holding gun, with wife in Guilemsi, Mauritania, 2004.

Steve O. Taylor (GHF) / Local guide near Atar, Mauritania, 2005.

Steve O. Taylor (GHF) / Desert guide riding camel, central Mauritania, 2004.

Steve O. Taylor (GHF) / Guide with his camel near Rachid, central Mauritania, 2004.

Steve O. Taylor (GHF) / Guides pointing to ancient rock painting of pastoralists being attacked by horsemen, Guilemsi, central Mauritania, 2004.

Steve O. Taylor (GHF) / Guide with camel in wadi near Atar, Mauritania, 2005.

Steve O. Taylor (GHF) / Local guide near Atar, Mauritania, 2005.

Steve O. Taylor (GHF) / Local guide near Atar, Mauritania, 2005.

Steve O. Taylor (GHF) / Guide and young boys with camel in wadi near Atar, Mauritania, 2005.

Steve O. Taylor (GHF) / Guide and young boy with camel in wadi near Atar, Mauritania, 2005.

Steve O. Taylor (GHF) / Guide with camel in wadi near Atar, Mauritania, 2005.

Steve O. Taylor (GHF) / Guide walking through wadi near Atar, Mauritania, 2005.

Steve O. Taylor (GHF) / Local guide with his wife wearing traditional clothes, central Mauritania, 2004.

Steve O. Taylor (GHF) / Bede, a Toubou guide, on the journey to the far north of Niger, 2005.

Steve O. Taylor (GHF) / Bede, a Toubou guide, with camel on the journey to the far north of Niger, 2005.

Steve O. Taylor (GHF) / Guides viewing giraffe rock engraving , northern Niger, 2005.

Steve O. Taylor (GHF) / Bede, a Toubou guide, with camel. Northern Niger, 2005.

Steve O. Taylor (GHF) / Guides and camel travelling across the Sahara to Cole De Sera, Niger, 2005.

Steve O. Taylor (GHF) / Guides and camel travelling across the Sahara to Cole De Sera, Niger, 2005.

Steve O. Taylor (GHF) / Bede, a Toubou guide, with camel crossing the Sahara, Niger, 2005.

Steve O. Taylor (GHF) / Guides and camel travelling across the Sahara to Cole De Sera, Niger, 2005.

Steve O. Taylor (GHF) / Guide and camel in the Sahara, Niger, 2005.

Steve O. Taylor (GHF) / Guide and camel in the Sahara, Niger, 2005.

Steve O. Taylor (GHF) / Portrait of Bashir, Hausa guide to southern Niger. 2005.

Steve O. Taylor (GHF) / Guide and camels in northern Niger, 2005.

Steve O. Taylor (GHF) / Guide with camels in northern Niger, 2005.

Steve O. Taylor (GHF) / Guide and camel stood by rock carvings of elephants, northern Niger, 2005.

Steve O. Taylor (GHF) / Guide stood by rock art depicting human and animal figures, northern Niger, 2005.

Steve O. Taylor (GHF) / Nomad desert guide with camel, central Mauritania, 2004.

Steve O. Taylor (GHF) / Desert guide standing by rock paintings, central Mauritania, 2004.

Steve O. Taylor (GHF) / Mountain guides and camera assistant resting on hike to Sankanbiriwa mountain. Sierra Leone, 2004-2005.

Steve O. Taylor (GHF) / Bede, a Toubou guide, with wife and children, in Sigadine, Niger, 2005.

Steve O. Taylor (GHF) / Ituri Forest Pygmy guides with motor bikes, Democratic Republic of the Congo, Africa, December 2011.

Steve O. Taylor (GHF) / Ituri Forest Pygmy guides with motor bikes, Democratic Republic of the Congo, Africa, December 2011.

Steve O. Taylor (GHF) / Ituri Forest Pygmy guides on motor bike, Democratic Republic of the Congo, Africa, December 2011.

Luiz Claudio Marigo / A tourist guide of Manaus showing the waters of the Amazonas (whitish, in his right hand) and Negro (yellowish, on his left hand) near Manaus, Amazonas State, Northern Brazil, October 2012.

Michel Roggo / Two guides of the Orang ulu people walking near the Long Lansat river, tributary of the Lansat and Sungai Melinau river, Gunung Mulu National Park, Sarawak, Borneo, Malyasia, March 2012. Taken for the...

Terry Whittaker / Naturalist / guide talking to tourists on whale-watching boat, Husavik, Skjalfandi Bay, Iceland, July 2012.

Enrique Lopez-Tapia / Cape cormorant (Phalacrocorax capensis) looking through hatch in boat to catch a fish from the hand of the wildlife watching cruise guide, Bay marina, Namibia, September 2013.

Enrique Lopez-Tapia / Cape cormorant (Phalacrocorax capensis) looking through hatch in boat to catch a fish from the hand of the wildlife watching cruise guide, Bay marina, Namibia, September 2013.

Enrique Lopez-Tapia / Cape cormorant (Phalacrocorax capensis) looking through hatch in boat to catch a fish from the hand of the wildlife watching cruise guide, Bay marina, Namibia, September 2013.

Simon Colmer / Guide looking into the rainforest canopy for chimpanzees, Budongo Forest Reserve, Uganda.

Wild Wonders of Europe / Widstr / Birdwatching guide and nature photographer Mladen Vasilev, Eastern Rhodope Mountains, Bulgaria, May 2013.

Roland Seitre / Guide watching Uvea Parakeet (Eunymphicus uvaeensis) feeding on fruit, Gossanah, Ouvea, Loyalty Islands Province, New Caledonia, August 2012

Eric Dragesco / Tadjik guides looking for Brown Bear (Ursus arctos) Dashti Jum Reserve, Tadjikistan, April 2012