Gavin Hellier / Aerial shot tracking along chalk cliffs at sunset, near Old Harry Rocks, Dorset, England, UK, May 2017. Hellier

David Noton / Dawn, Old Harry and his wife. The Foreland, Studland, Dorset. English coastal scene.

Graham Eaton / Sea Stacks of Cretaceous age Chalk near Old Harry Rocks, Studland, Dorset, March. These stacks are locally called The Pinnacles.

Guy Edwardes / Old Harry Rocks from Ballard Down, Swanage, Isle of Purbeck, Dorset, England, UK. December 2014.

Gavin Hellier / Aerial view tracking in reverse along the chalk cliffs near Old Harry Rocks, Dorset, England, UK, June 2017. Hellier

Gavin Hellier / Aerial view tracking in reverse along the chalk cliffs near Old Harry Rocks, Dorset, England, UK, June 2017. Hellier

Ross Hoddinott / Old Harry Rocks at dawn, looking towards the Isle of Wight, Studland, Dorset, England, UK. September 2015.

Ross Hoddinott / Old Harry Rocks at dawn, looking towards the Isle of Wight, Studland, Dorset, England, UK. September 2015.

Gavin Hellier / Old Harry Rocks at dawn, The Foreland or Handfast Point, Studland, Isle of Purbeck, Dorset, UK 2009

Ross Hoddinott / Old Harry Rocks, on a stormy morning, chalk stack near Studland, Dorset, UK. April 2012. NOT AVAILABLE FOR USE ON 2016 CALENDARS WORLDWIDE.

Ross Hoddinott / Old Harry Rocks, in early morning light and stormy sky, The Purbecks, Dorset, UK. May 2012.

Ross Hoddinott / Old Harry Rocks, in early morning light and stormy sky, The Purbecks, Dorset, UK. May 2012.

Philippe Clement / The eroded chalk sea stack The Pinnacles near Old Harry Rocks at Handfast Point on the Isle of Purbeck along the Jurassic Coast in Dorset, UK November 2012

Philippe Clement / The eroded chalk sea stack The Pinnacles near Old Harry Rocks at Handfast Point on the Isle of Purbeck along the Jurassic Coast in Dorset, UK November 2012

Philippe Clement / The eroded chalk sea stacks Old Harry Rocks at Handfast Point on the Isle of Purbeck along the World Heritage Site Jurassic Coast in Dorset, UK, November 2012

Philippe Clement / The eroded chalk sea stacks Old Harry Rocks at Handfast Point on the Isle of Purbeck along the World Heritage Site Jurassic Coast in Dorset, UK, November 2012

Nick Upton / 2020VISION / RSPB warden Harry Paget-Wilkes and Black labrador (Canis familiaris) approaching young Eurasian / Common cranes released by the Great Crane Project during a predator aversion training exercise, Somers...

Dan Burton / New Harry ferry near Falmouth on the River Fal, Cornwall. May 2009.

Ross Hoddinott / The Pinnacles (rock stacks) near Old Harry Rocks. Studland, The Purbecks, Dorset, UK, April 2011.

David Noton / Old Harry and his Wife. Studland, Jurassic Coast, Dorset, England, November 2009.

David Noton / Old Harry Rocks, Handfast Point, Studland. Jurassic Coast, Dorset, England, March 2010.

David Noton / Old Harry Rocks, Handfast Point, Studland. Jurassic Coast, Dorset, England, March 2010.

Pete Oxford / Man (a balata bleeder, Harry Samuels) collecting natural latex from the Balata / Bullet wood tree (Manilkara bidentata), Katoka, Rupununi, Guyana, Model released, February 2010

Pete Oxford / Man (a balata bleeder, Harry Samuels) collecting natural latex from the Balata / Bullet wood tree (Manilkara bidentata), Katoka, Rupununi, Guyana, Model released, February 2010

Ross Hoddinott / Old Harry Rocks, Studland, colourful sunrise, Dorset, England, UK. April 2010.

Ross Hoddinott / Old Harry Rocks, Studland, colourful sunrise, Dorset, England, UK. April 2010.

Ross Hoddinott / Old Harry Rocks, chalk stacks located east of Studland, at sunrise, Dorset, UK. April 2009.

Jouan & Rius / Harry's Pund, Eshaness Peninsula, Mainland West, Shetland Islands, Scotland, UK

Gary K. Smith / Pleasure craft taking tourists sightseeing along the coast of Dorset, with cliffs and Old Harry's rocks in the background, UK

Peter Lewis / Old Harry Rocks near Swanage, Dorset Jurassic Coast World Heritage Site, with person standing on headland

Peter Lewis / Common cormorant (Phalacrocorax carbo) on rock, Old Harry Rocks near Swanage, Dorset. Jurassic Coast World Heritage Site.

Peter Lewis / Common cormorant (Phalacrocorax carbo) on rock, Old Harry Rocks near Swanage, Dorset. Jurassic Coast World Heritage Site.

David Noton / Old Harry Rocks, Studland, Dorset, England, UK

Mark Moffett / Asian Pit Viper (Trimeresurus sp) measured by herpetologist Harry Greene, Tam Dao National Park, Vietnam

Mark Moffett / Asian Pit Viper (Trimeresurus sp) caught by herpetologist Harry Greene for study, Tam Dao National Park, Vietnam

Harry Collins / Tracking shot of African elephant (Loxodonta africana) calf walking. Then the animal picks up a grass stem and begins to feed on it. Amboseli National Park, Kenya, Africa. September.

Harry Collins / African elephant (Loxodonta africana) herd, containing adults and calves, walking together across savannah, Amboseli National Park, Kenya, Africa. September.

Harry Collins / African elephant (Loxodonta africana) calf raising its trunk while walking with herd, Amboseli National Park, Kenya, Africa. November.

Harry Collins / African elephant (Loxodonta africana) juvenile walking towards the camera, Amboseli National Park, Kenya, Africa. November.

Harry Collins / African bush elephant (Loxodonta africana) herd, adults and juveniles, drinking from a small pool, Maasai Mara, Kenya, Africa. November. Endangered.

Harry Collins / African bush elephant (Loxodonta africana) drinking, Maasai Mara, Kenya, Africa. November. Endangered.

Harry Collins / African bush elephant (Loxodonta africana) juvenile walking near adult. Then the animal stops and raises its trunk. Maasai Mara, Kenya, Africa. November. Endangered.

Harry Collins / African bush elephant (Loxodonta africana) herd, adults and juveniles, walking through savannah grassland, Maasai Mara, Kenya, Africa. November. Endangered.

Harry Collins / Brown bear (Ursus arctos) feeding on a Sockeye salmon (Oncorhynchus nerka) in a shallow river. Glacous-winged gulls (Larus glaucescens) fly into frame and congregate around the bear. Katmai, Alaska, A...

Harry Collins / Brown bear (Ursus arctos) hunting Sockeye salmon (Oncorhynchus nerka) in a shallow river. The bear catches a Salmon. Katmai, Alaska, August. Sequence 1/2.

Harry Collins / Brown bear (Ursus arctos) hunting Sockeye salmon (Oncorhynchus nerka) using the 'snorkeling' technique. The bear looks for fish by immersing its head in water. Katmai National Park, Alaska. August.

Harry Collins / Pileated woodpecker (Dryocopus pileatus) male entering frame and landing on tree with nest hole. Then the bird feeds one of the chicks which is begging for food. Florida. April.

Harry Collins / Pileated woodpecker (Dryocopus pileatus) male regurgitates food and then feeds one of his chicks at the nest hole, Florida. April.

Harry Collins / Pileated woodpecker (Dryocopus pileatus) male feeding his begging chicks at nest hole in tree, Florida, April.

Harry Collins / Elk (Cervus canadensis) bull bugling during the rut, Jasper National Park, Canada. September.

Harry Collins / Great grey owl (Strix nebulosa) shaking water and moisure off its feathers, Alberta, Canada. September.

Harry Collins / Peregrine falcon (Falco peregrinus) perched on a branch in fog and rain. The bird is looking around. New Jersey, USA. March.

Harry Collins / Moose (Alces alces) bull eating, Jasper National Park, Alberta, Canada. October.

Harry Collins / Brown bear (Ursus arctos) tearing and then eating the skin and flesh of a Sockeye salmon (Oncorhynchus nerka), Katmai national park, Alaska. August.

Harry Collins / Brown bear (Ursus arctos) hunting Sockeye salmon (Oncorhynchus nerka) in a river. The bear catches a fish, takes it onto the gravel and then the animal begins to feed on it. Katmai national park, Alas...

Harry Collins / Tracking shot of a Lion (Panthera leo) male solo hunting a Hippopotamus (Hippopotamus amphibius). The lion leaps onto the back of the animal and takes it down. It subdues the Hippo by biting it around...

Harry Collins / Brown bear (Ursus arctos) and cub walking across a shallow river, during Salmon (Salmonidae sp.) migration. A gull (Laridae sp.) is standing infront of the bears. Katmai National Park, Alaska. August.

Harry Collins / Brown bear (Ursus arctos) hunting Salmon (Salmonidae sp.) using the 'snorkeling' technique. The bear looks for fish by immersing its head in water. Katmai National Park, Alaska. August.

Harry Collins / Brown bear (Ursus arctos) hunting Salmon (Salmonidae sp.) using the 'snorkeling' technique. The bear looks for fish by immersing its head in water. Katmai National Park, Alaska. August.

Harry Collins / Brown bear (Ursus arctos) hunting Salmon (Salmonidae sp.) in a river. The bear chases after its prey but loses it, then the animal stands on its hind legs and looks around. Katmai National Park, Alask...

Harry Collins / Tracking shot of a Brown bear (Ursus arctos) walking along the water's edge, during Salmon (Salmonidae sp.) migration. In the background, three cubs are following. Katmai National Park, Alaska. August...

Harry Collins / Peregrine falcon (Falco peregrinus) perched on a tree branch, looking around. The bird spots something moving past and watches it closely. New Jersey, USA.

Harry Collins / Brown bear (Ursus arctos) mother and cub feeding on salmon. Cub pulls half of salmon apart and walks away, leaving frame. Second cub enters frame and walks towards mother, Katmai, Alaska, USA, August.

Harry Collins / Elk (Cervus canadensis) stag in rut bugling as it wades through Bow River, Banff National Park, Alberta, Canada, September.

Harry Collins / Tracking shot of Brown bear (Ursus arctos) mother catching Sockeye salmon (Oncorhynchus nerka) in river as cubs wait on riverbank, Katmai, Alaska, USA, August.

Harry Collins / Tracking shot of Brown bear (Ursus arctos) catching Sockeye salmon (Oncorhynchus nerka) for cubs, Katmai, Alaska, USA, August.

Harry Collins / Tracking shot of Brown bear (Ursus arctos) mother wading through river to catch Sockeye salmon (Oncorhynchus nerka) as her three cubs follow along riverbank, Katmai, Alaska, USA, August.

Harry Collins / Tracking shot of Brown bear (Ursus arctos) chasing salmon down river as a Gull (Larus sp.) flies past and another bear watches, Katmai, Alaska, USA, August.

Harry Collins / Tracking shot of Brown bear (Ursus arctos) male looking around and walking through river, Katmai, Alaska, USA, August.

Harry Collins / Tracking shot of Brown bear (Ursus arctos) mother carrying Sockeye salmon (Oncorhynchus nerka) as cub watches, Katmai, Alaksa, USA, August.

Harry Collins / Tracking shot of Brown bear (Ursus arctos) mother walking into river as cubs follow, Katmai, Alaska, USA, August.

Harry Collins / Brown bear (Ursus arctos) cub playing with a rock and licking paw whilst standing beside mother in river, Katmai, Alaska, USA, August.

Harry Collins / Tracking shot of Brown bear (Ursus arctos) catching a Sockeye salmon (Oncorhynchus nerka) and carrying it out of river, Katmai, Alaska, USA, August.

Harry Collins / Tracking shot of Common loon (Gavia immer) feeding chick small fish, Maine, USA, July.

Harry Collins / Lion (Panthera leo) mother grooming cub and growling whilst lying in grassland, Masai Mara, Kenya.

Harry Collins / Tracking shot of Lion (Panthera leo) mother walking with cubs through grassland, Masai Mara, Kenya.

Harry Collins / Tracking shot of lion (Panthera leo) mother walking through grassland with cub, Masai Mara, Kenya.

Harry Collins / Tracking shot of Elk (Cervus canadensis) bull walking across river and vocalising during rut, Jasper National Park, Alberta, Canada, September.

Harry Collins / Tracking shot of Elk (Cervus canadensis) bull walking at the edge of forest during rut, Jasper National Park, Alberta, Canada, September.

Harry Collins / Tracking shot of Elk (Cervus canadensis) bull following female during rut and smelling her scent glands, triggering a Flehmen response. Bull bellows as female runs away, Jasper National Park, Alberta,...

Harry Collins / Tracking shot of Lion (Panthera leo) walking through tall grass in scrubland, Masai Mara, Kenya.

Harry Collins / American alligator (Alligator mississippiensis) lowering body into water and bellowing to create water droplets before raising body out of water, Florida, US, April.

Harry Collins / Lion (Panthera leo) male juvenile panting and shaking head to rid face of flies, Masai Mara, Kenya.

Harry Collins / Elk (Cervus canadensis) bull bellowing in forest during rut, Jasper National Park, Alberta, Canada, September.

Harry Collins / Masai giraffe (Giraffa tippelskirchi) drinking as Yellow-billed oxpeckers (Buphagus africanus) peck insects off of its neck, Maasai Mara, Kenya, Africa.

Harry Collins / Zebra (Equus quagga) standing in grassland as Yellow-billed oxpeckers (Buphagus africanus) peck insects from its body whilst perching on its back and head, Maasai Mara, Kenya, Africa.

Harry Collins / Zebra (Equus quagga) standing in grassland as Yellow-billed oxpeckers (Buphagus africanus) peck insects off its body, with one bird entering frame and landing on the zebra's side, Maasai Mara, Kenya,...

Harry Collins / Great blue heron (Ardea herodias) holding American bullfrog (Lithobates catesbeianus) in beak whilst standing in swamp, Florida, USA.

Harry Collins / Great blue heron (Ardea herodias) holding Banded water snake (Nerodia fasciata) in beak whilst standing in swamp, Florida, USA.

Harry Collins / Zebra (Equus quagga) standing in grassland as Yellow-billed oxpeckers (Buphagus africanus) peck insects off its side and face, Maasai Mara, Kenya, Africa. Sequence 2/2.

Harry Collins / African elephant (Loxodonta africana) feeding on grass, Maasai Mara, Kenya, Africa.

Harry Collins / Lion (Panthera leo) male feeding on the stomach of dying young Hippopotamus (Hippopotamus amphibius) in the Maasai Mara, Kenya.

Harry Collins / Lion (Panthera leo) male feeding on underbelly of dying young Hippopotamus (Hippopotamus amphibius), Maasai Mara, Kenya.

Harry Collins / Lion (Panthera leo) male feeding on leg and neck of dying young Hippopotamus (Hippopotamus amphibius), Maasai Mara, Kenya.

Harry Collins / Cheetah (Acinonyx jubatus) Blue wildebeest (Connochaetes taurinus) kill as vultures wait behind, Serengeti, Tanzania.