Huw Cordey / Mexican free-tailed bats (Tadarida brasiliensis) emerging from Bracken Cave, Texas. Over 15 million bats are thought to live in this cave, making it the greatest concentration of mammals on the planet...

Huw Cordey / Sir David Attenborough recording voice over for BBC series, The Hunt. September 2015.

Huw Cordey / Domesticated Bactrian camels (Camelus bactrianus) walking across Gobi Desert, Mongolia, January 2004. From BBC Planet Earth Series.

Huw Cordey / Aerial view of limestone island formations in Ha Long Bay, Vietnam, 2005. Filmed for BBC Planet Earth series.

Huw Cordey / Aerial view of limestone island formations in Ha Long Bay, Vietnam, 2005. Filmed for BBC Planet Earth series.

Huw Cordey / Aerial view of abstract dune patterns with snow, Gobi Desert, Mongolia, January 2004. Filmed for BBC Planet Earth series.

Huw Cordey / Aerial view of tropical rainforest canopy with mist and yellow flowering tree (Tabebuia sp), Corcovado NP, Costa Rica. Filmed for BBC Planet Earth series.

Huw Cordey / Aerial sand dunes, Sossusvlei, Namib Naukluft NP, Namibia, 2005 From BBC Planet Earth series

Huw Cordey / Huw Cordey, producer of Jungles episode, BBC Planet Earth series, in canopy of rainforest tree, Costa Rica, 2005.

Huw Cordey / Huw Cordey, producer of Jungles episode, BBC Planet Earth series, up in canopy of rainforest tree, Costa Rica, 2005.

Huw Cordey / Chuckwalla lizard sunning {Sauromalus obesus} Grand Canyon, AZ, USA

Huw Cordey / Marine litter - mostly shoes (flip flops) and plastic bottles washed up on shore with Aldabra giant tortoise (Aldabrachelys gigantea). Cinq Cases, Aldabra Island, Indian Ocean

Huw Cordey / Marine litter - mostly shoes flip flops) and plastic bottles washed up on shore with Aldabra giant tortoise (Aldabrachelys gigantea). Cinq Cases, Aldabra Island, Indian Ocean

Huw Cordey / Pathway made of plastic shoes ( flip flops) washed up on the beach and collected within 20 metres of the middle of the picture. In the background is a Aldabra giant tortoise (Aldabrachelys gigantea)...

Huw Cordey / Aerial view of mountains in Tweedsmuir South Provincial Park, British Columbia, Canada. August 2011

Huw Cordey / Aerial view of mountains in Tweedsmuir South Provincial Park, British Columbia, Canada.August 2011

Huw Cordey / Hunlen Falls, Canada's highest free falling waterfall, Tweedsmuir South Provincial Park, British Columbia, Canada. August 2011

Huw Cordey / Tweedsmuir South Provincial Park, British Columbia, Canada. August 2011

Huw Cordey / Tweedsmuir South Provincial Park, British Columbia, Canada. August 2011

Huw Cordey / Tweedsmuir South Provincial Park, British Columbia, Canada. August 2011

Huw Cordey / Emergence of Mexican free-tailed bats (Tadarida brasiliensis) from Bracken Cave, Texas. Bracken Cave is the summertime home of over 15 milions bats, making it the largest colony of bats in the world a...

Huw Cordey / Mexican free-tailed bats (Tadarida brasiliensis) leaving Bracken Cave, Texas. Bracken Cave is the summertime home of over 15 milions bats, making it the largest colony of bats in the world and one of...

Huw Cordey / Mexican free-tailed bats, (Tadarida brasiliensis), leaving Bracken Cave, Texas. Bracken Cave is the summertime home of over 15 milions bats, making it the largest colony of bats in the world and one o...

Huw Cordey / Mexican free tailed bats, (Tadarida brasiliensis), leaving Bracken Cave, Texas. Bracken Cave is the summertime home of over 15 milions bats, making it the largest colony of bats in the world and one o...

Huw Cordey / Mexican free-tailed bats, (Tadarida brasiliensis), leaving Bracken Cave, Texas. Bracken Cave is the summertime home of over 15 milions bats, making it the largest colony of bats in the world and one o...

Huw Cordey / Thousands of Mexican free-tailed bats (Tadarida brasiliensis) emerging from Bracken Cave, Texas. Bracken Cave is the summertime home of over 15 milions bats, making it the largest colony of bats in th...

Huw Cordey / Wildlife cameraman, Mat Aeberhard, filming Mexican free-tailed bats (Tadarida brasiliensis) emerging from Bracken Cave, Texas. Bracken Cave is the summertime home of over 15 milions bats, making it th...

Huw Cordey / Aerial view of smoke in controlled burn, Everglades National Park, Florida. May 2011.

Huw Cordey / Aerial view of controlled burn in Everglades National Park, Florida. Aerial. June 2011.

Huw Cordey / Red-side garter snakes (Thamnophis sirtalis parietalis) outside hibernation dens. Narcisse snake dens, Manitoba, Canada. The dens are home to over 50,000 garter snakes, making it the greatest concentr...

Huw Cordey / Red-side garter snakes (Thamnophis sirtalis parietalis) outside their hibernation dens. Narcisse snake dens, Manitoba, Canada. The dens are home to over 50,000 garter snakes, making it the greatest co...

Huw Cordey / Red-side garter snakes (Thamnophis sirtalis parietalis) following their emergence from hibernation. Narcisse snake dens, Manitoba, Canada. The dens are home to over 50,000 garter snakes making it the...

Huw Cordey / Wildlife cameraman, Alastair MacEwen, filming thousands of red-sided garter snakes with a lightweight jib arm, Narcisse snake dens, Manitoba, Canada. These hibernation dens are home to more than 50,00...

Huw Cordey / Red-side garter snakes (Thamnophis sirtalis parietalis) following their emergence from hibernation, Narcisse snake dens, Manitoba, Canada. These are mostly males who mass outside the dens waiting for...

Huw Cordey / Red-side garter snakes (Thamnophis sirtalis parietalis) outside their hibernation dens, Narcisse snake dens, Manitoba, Canada. These are males on the lookout for females. The dens are home to over 50,...

Huw Cordey / Red-side garter snakes (Thamnophis sirtalis parietalis) outside hibernation dens, Narcisse snake dens, Manitoba, Canada. The snake in the foreground is a female . She is surrounded by the smaller male...

Huw Cordey / Red-side garter snakes (Thamnophis sirtalis parietalis) following their emergence from hibernation. Narcisse snake dens, Manitoba, Canada. The dens are home to over 50,000 garter snakes, making it the...

Huw Cordey / Coyote (Canis latrans), Death Valley, California. May.

Huw Cordey / Coyote (Canis latrans) foraging, Death Valley, California. May.

Huw Cordey / German wildlife cameraman, Rolf Steinmann, gets ready to film on his Arri Alexa, Death Valley, California. May 2011 on location for Discovery North America series

Huw Cordey / Coyote (Canis latrans), Death Valley, California. May.

Huw Cordey / Female Olive Ridley turtle (Lepidochelys olivacea) returning to the sea after nesting, Nancite Beach, Santa Rosa National Park, Costa Rica.

Huw Cordey / Black iguana (Ctenosaura similis) predating hatchling olive ridley turtle (Lepidochelys olivacea), Nancite, Santa Rosa National Park, Costa Rica.

Huw Cordey / Tracks of hatchling Olive ridley turtles (Lepidochelys olivacea), Nancite Beach, Santa Rosa National Park, Costa Rica.

Huw Cordey / American crocodile (Crocodylus acutus) hunting hatchling Olive Ridley turtles. in the shallows of Nancite Beach, Santa Rosa National Park, Costa Rica.

Huw Cordey / 4x4 drive stuck in the mud on the track to Nancite, The driver is using a winch to pull the vehicle out of the mud. Santa Rosa National Park, Costa Rica. November 2010.

Huw Cordey / Classic 'U' shaped glacial valley, Labrador, Canada. June 2010.

Huw Cordey / Polar bear (Ursus arctos) footprints with human hand for scale, Labrador, Canada. June 2010