Martin Dohrn / Maricopa harvester ant (Pogonomyrmex maricopa) fighting two ants of different species (Aphaenogaster cockerelli), over territory Arizona, USA

Martin Dohrn / Army ant (Eciton sp.) close up of ants in a bivouac or temporary nest, South America

Martin Dohrn / Army ant (Eciton sp.) forming a bivouac or temporary nest, South America

Martin Dohrn / La Selva forest, Costa Rica, South America,

Martin Dohrn / Army ant (Eciton sp.) carrying larvae during migration to a new nest site, South America

Martin Dohrn / Army ant (Eciton sp) forming an ant bridge, South America

Martin Dohrn / Team of army ants (Eciton sp.) carrying prey

Martin Dohrn / Army ants (Eciton sp) with prey, South America

Martin Dohrn / 'Frankencam' camera specialised equipment for filming ants used to film army ants, La Selva, Costa Rica

Martin Dohrn / Army ant (Eciton sp.) carrying larvae during migration to a new nest site, South America

Martin Dohrn / Army ant (Eciton sp.) carrying larvae as a team during migration to a new nest site, South America

Martin Dohrn / Army ant (Eciton sp.) carrying larvae during migration to a new nest site, South America

Martin Dohrn / 'Frankencam', specialised camera equipment used to film army ants in Costa Rica

Martin Dohrn / Bullet ant (Paraponera clavata) portrait showing mandibles, from South America

Martin Dohrn / Bullet ant (Paraponera clavata) portrait, from South America

Martin Dohrn / Bullet ants (Paraponera clavata) close-up, South America

Martin Dohrn / Army ant (Eciton sp.) carrying larvae during migration to a new nest site, South America

Martin Dohrn / Leaf-cutter ant (Atta sp) soldier close up, Costa Rica

Martin Dohrn / Bullet ant (Paraponera clavata) portrait, from South America

Martin Dohrn / Weaver ants (Oecophylla sp) with cockroach prey, Sri Lanka

Martin Dohrn / Weaver ants (Oecophylla sp) with cockroach prey, Sri Lanka

Martin Dohrn / Weaver ants (Oecophylla sp) Sri Lanka

Martin Dohrn / Leaf cutter ants (Atta sp) tending fungus garden with leaves as growth medium, Costa Rica

Martin Dohrn / Weaver ants (Oecophylla sp) Sri Lanka

Martin Dohrn / Weaver ants (Oecophylla sp) with cockroach prey, Sri Lanka

Martin Dohrn / Weaver ants (Oecophylla sp) Sri Lanka

Martin Dohrn / Weaver ants (Oecophylla sp) Sri Lanka

Martin Dohrn / Stitched panoramic image of Ostracods using their light to display to mates. There are two species here, both from a new genus and neither of which has been properly described. At this stage, they are...

Martin Dohrn / Stitched panoramic image of Ostracods using their light to display to mates. There are two species here, both from a new genus and neither of which has been properly described. At this stage, they are...

Martin Dohrn / Lake at night with band of the Milky Way overhead and Glow worm (Lampyris noctiluca) in foreground. Lilhac, near Toulouse, Haute Garonne, France, July.

Martin Dohrn / Ammonite Night filming vehicle, on location for National Geographic Nightstalkers. *THIS IMAGE CAN ONLY BE USED IF NATIONAL GEOGRAPHIC NIGHTSTALKERS IS REFERENCED*

Martin Dohrn / Martin Dohrn in night filming vehicle, on location for National Geographic Nightstalkers, Topi Plain, Masai Mara, Kenya. Image taken using a thermal camera, without artificial light. *THIS IMAGE CAN O...

Martin Dohrn / Nile crocodile (Crocodylus niloticus) resting at night on the banks of the Mara River, Masai Mara, Kenya. Two hippos (Hippopotamus amphibius) sleeping nearby. Image taken with infared camera, without...

Martin Dohrn / Spotted hyena (Crocuta crocuta) at night, Topi Plain, Masai Mara, Kenya. Image taken using a "starlight camera" without artificial light, on location for National Geographic Nightstalkers film. *THIS...

Martin Dohrn / Leopard (Panthera pardus) resting at night. Yala National Park, Sri Lanka. Image taken with infared camera using no artificial light, on location for National Geographic Nightstalkers. *THIS IMAGE CAN...

Martin Dohrn / Thermal image of two Baird's tapir (Tapirus bairdii) at forest waterhole at night. Santa Rosa National Park, Costa Rica. Image taken at night with no artificial light, on location for National Geograp...

Martin Dohrn / Four nile crocodiles (Crocodylus niloticus) resting at night on the banks of the Mara River, Masai Mara, Kenya. Image taken with infared camera, without any visible artificial light, on location for N...

Martin Dohrn / Leopard (Panthera pardus) resting at night. Yala National Park, Sri Lanka. Image taken with infared camera using no artificial light, on location for National Geographic Nightstalkers film. *THIS IMAG...

Martin Dohrn / Leopard (Panthera pardus) resting at night. Yala National Park, Sri Lanka. Image taken with infared camera using no artificial light, on location for National Geographic Nightstalkers film. *THIS IMAG...

Martin Dohrn / Leopard (Panthera pardus) resting at night. Yala National Park, Sri Lanka. Image taken with thermal camera, using no artificial light, on location for National Geographic Nightstalkers film. *THIS IMA...

Martin Dohrn / Leopard (Panthera pardus) resting at night. Yala National Park, Sri Lanka. Image taken with 'starlight camera' using no artificial light, on location for National Geographic Nightstalkers film. *THIS...

Martin Dohrn / Herd of wildebeest (Connochaetes taurinus) feeding at night. Photographed using 'Starlight Camera' technology without artificial lighting. Can only be used if National Geographic "Night of the Lion"...

Martin Dohrn / Estuary at night in Yala National Park, Sril Lanka. Image taken using infa red camera technology without artificial light.

Martin Dohrn / Asian elephant family feeding (Elaphus maximus), Yala National Park, Sri Lanka. Image taken at night using infa red camera technology without artificial light.

Martin Dohrn / Wildebeest migration (Connochaetes taurinus), Masai Mara, Kenya. Image taken at night using thermal camera technology without artificial light.

Martin Dohrn / Lion family (Panthera leo) resting after feeding, Masai Mara, Kenya. Image taken at night using starlight camera technology without artificial lighting.

Martin Dohrn / Thermal image of three young male lions (Panthera leo) feeding on a rotting zebra foal that had drowned in the mud. Masai Mara, Kenya. Image taken at night using thermal camera technology without arti...

Martin Dohrn / Starry night, Masai Mara, Kenya. Imagetaken using starlight camera technology without artificial light.

Martin Dohrn / Sleeping African elephants (Loxodonta africana), two adults and offspring, Masai Mara, Kenya. Image taken at night using thermal camera technology without artificial light.

Martin Dohrn / Chital / Spotted deer (Axis axis) grazing at the waters edge with storks and egrets roosting above. Yala National Park, Sri Lanka. Image taken at night using thermal camera technology without artifici...

Martin Dohrn / Chital / Spotted deer herd (Axis axis), Yala National Park, Sri Lanka. Image taken at night using infa red camera technology without artificial light.

Martin Dohrn / Lioness (Panthera leo) growling at hers and her sister's unruly cubs as they try to persuade their mother to take them hunting. Masai Mara, Kenya. Image taken at night using thermal camera technology...

Martin Dohrn / Zebras (Equus quagga) and wildebeest (Conochaetes taurinus) grazing together, Masai Mara, Kenya. Image taken at night using Thermal Camera technology without artificial lighting.

Martin Dohrn / Indian Elephant family foraging at night. Photographed at night using 'Starlight Camera' technology without artificial lighting.

Martin Dohrn / Crocodiles (Crocodylus niloticus) and hippos (Hippopotamus amphibius) resting at night on river bank, Masai Mara, Kenya. Image taken using starlight camera technology with no artificial light.

Martin Dohrn / Herd of wildebeest (Connochaetes taurinus) feeding and resting at night. Image taken at night using thermal camera technology, with no artificial light.

Martin Dohrn / Indian elephants (Elephas maximus) at night, Yala National Park, Sri Lanka. Image taken using thermal camera technology with no artificial light.

Martin Dohrn / Pack of hyenas (Crocuta crocuta) feeding on prey at night with black-back jackals (Canis mesomelas). Image taken at night using thermal camera technology, with no artificial light.

Martin Dohrn / Herd of wildebeest (Connochaetes taurinus) feeding at night. Photographed using 'Starlight Camera' technology without artificial lighting.

Martin Dohrn / Two lionesses walking along road with three cubs, Masai Mara, Kenya.

Martin Dohrn / Lionesses resting, Masai Mara, Kenya. Image taken at night using thermal camera technology, with no artificial light.

Martin Dohrn / Male lion (Panthera leo) feeding on wildebeest carcass, lioness observing. Masai Mara, Kenya. Photographed at night using Thermal Camera technology without artificial lighting.

Martin Dohrn / Alex Verner and Clinton Edwards in filming vehicle by moonlight, on location for "Night of the Lion", 2009. Thermal camera technology was used to film lions at night. Can only be used if National Geo...

Martin Dohrn / Martin Dohrn operating camera for filming at night, Masai Mara, Kenya, 2009, Can only be used if National Geographic "Night of the Lion" is mentioned.

Martin Dohrn / Alex Verner in filming vehicle operating thermal cameras, on location for "Night of the Lion", 2009. Can only be used if National Geographic "Night of the Lion" is mentioned

Martin Dohrn / Lions (Panthera leo) feeding in Masai Mara, Kenya. Image taken at night using thermal camera technology without artificial lighting. Can only be used if National Geographic "Night of the Lion" is me...

Martin Dohrn / Lions (Panthera leo) hunting hippopotamus, Masai Mara, Kenya. Image taken at night using 'Starlight Camera' technology without artificial lighting. Can only be used if National Geographic "Night of...

Mike Salisbury / Martin Dohrn films David Attenborough talking about butterfly migration for BBC TV production of 'Life in the Undergrowth', Peru, October 2004

Mike Salisbury / Martin Dohrn films David Attenborough talking about butterfly migration for BBC TV production of 'Life in the Undergrowth', Peru, October 2004

Martin Dohrn / Red Lily flowers {Lilium pomponium} Maritime Alps, France

John Downer / Cameraman Martin Dohrn filming sow birth watched by local woman, Papua New Guinea, for tv series "Lifesense"

Martin Dohrn / Water lilies {Nymphaeacae} growing in Bosherston Pools (National trust), Pembrokeshire, Wales, UK

Martin Dohrn / Meadow brown butterfly {Maniola jurtina} on bramble flower, UK

Martin Dohrn / Sun shining behind cloud formations over sea with boat on horizon, Sussex, UK

Martin Dohrn / Aerial view of mixed broadleaf woodland in autumn, Auvergne, France.

Martin Dohrn / View of Queenstown, from top of mountain, New Zealand

Martin Dohrn / Aerial view of Gold mining in the Amazon basin, State of Para, Brazil

Martin Dohrn / Kayapo Indian village with straw huts, Brazil.

Martin Dohrn / Schrader Ranges landscape in the highlands of Papua New Guinea

Martin Dohrn / Matai trees and ferns in Temperate Rainforest, New Zealand

Martin Dohrn / Portrait of Hagahai hunter holding bow & arrows and child, Papua New Guinea 1992

Martin Dohrn / Hagahai warriors standing on stone in grassland, hunting pigs, smoking them out of field, Papua New Guinea 1992

Martin Dohrn / Arara Indian boy outside hut home, Xingu River, Amazon Basin, Brazil, South America, 1994

Martin Dohrn / Aerial view of river with introduced Willow and Poplar trees, Arrowtown, New Zealand

Martin Dohrn / Portrait of Kayapo indian boy with body painted using plant dye, Amazon Basin, Brazil

Martin Dohrn / Golden ringed dragonfly larva {Cordulegaster boltonii} UK

Martin Dohrn / Mosquito {Culex pipiens} emerging from pupa at water surface, UK

Martin Dohrn / Larvae of Mosquito {Culex pipiens} filter feeding at surface of water, UK

Martin Dohrn / Mosquito {Culex pipiens} emerging from pupa at water surface, UK

Martin Dohrn / Looking up in Silver birch forest canopy in winter {Betula verrucosa} K

Martin Dohrn / Huli wigman standing on traditional suspension bridge above river, Papua New Guinea

Martin Dohrn / Hagehai hunter and child holding weapons, Papua New Guinea

John Downer / Cameraman Martin Dohrn filming Jain monk for BBC television series, Lifesense, 1990

Martin Dohrn / European Alps - aerial view in winter with snow on mountains

Martin Dohrn / Larva of Cardinal beetle (Pyrochroa serraticornis) in Birch log, UK

Martin Dohrn / Common hawker (Aeshna juncea) male recently emerged from chrysalis, UK