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Holger Hennern

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Spider web with tiny spider, Mallorca, Spain

Arrowsmith Spider Orchid (Caladenia crebra) flower, Southwest Western Australia

Cloudberry plants (Rubus chamaemorus) with ripe berries in Northern Norway tundra

Flower of Sturt's Desert Rose (Gossypium sturtianum), Northern Territory, Australia

Lizard on a rock, close-up of Slater's Ring-tailed Dragon (Ctenophorus slateri), Red Centre of Australia, Northern Territory

Flowers of Sturt's Desert Rose (Gossypium sturtianum), Northern Territory, Australia

Eucalyptus tree and red hills in the dry desert landscape of the red centre of Australia, Northern Territory

Weathered limestone formations in the Pinnacles Desert, Nambung National Park, Western Australia

Limestone Pinnacles in the Pinnacles Desert, Nambung National Park near Cervantes, Western Australia

Large Pansy Orchid (Diuris magnifica) in natural habitat in Southwest Western Australia

Limestone Spider Orchid (Caladenia bicalliata) in Southwest Western Australia

Fan-Leaved Sundew (Drosera platypoda) with sticky greenish-yellow leaves in Southwest Western Australia

Close-up of two leaves of English sundew (Drosera anglica) with trapped prey in bog, Northern Norway

Ripe cloudberry (Rubus chamaemorus) in Northern Norway tundra

Painted sundew (Drosera zonaria) colony growing in white sand, Southwest Australia

Close-up of two rosettes of painted sundew (Drosera zonaria) in natural habitat, Western Australia

Painted sundew (Drosera zonaria) rosettes, close-up, Western Australia

Dense-growing rosettes of painted sundew (Drosera zonaria) in natural habitat on white sand, Western Australia

Waterhole at Ormiston Gorge with Eucalyptus trees, West MacDonnell Ranges, Red Centre of Australia

South African Oryx antelope (Oryx gazella) in attentive posture, on a dry rocky plain, Namibia

Togetherness, two African Savannah Elephants (Loxodonta africana) leaning on each other with their heads and trunks, Namibia

Aerial view of the bushland of the Australian outback, Red Centre, Northern Territory, Australia

Head of the Australian water dragon (Intellagama lesueurii), natural habitat, NSW, Australia

MacDonnell Ranges Cycad (Macrozamia macdonnellii) beneath the red hills of Kings Canyon, Watarrka National Park, Australia

Lizard sunbathing on a red rock, Slater's Ring-tailed Dragon (Ctenophorus slateri), Northern Territory, Red Centre, Australia

Kings Canyon’s red hills, Watarrka National Park, Northern Territory

Sheer cliff walls of Kings Canyon, Watarrka National Park, Northern Territory, Australia

Lizard sunbathing on a red rock, Slater's Ring-tailed Dragon (Ctenophorus slateri), Northern Territory, Red Centre, Australia

MacDonnell Ranges Cycad (Macrozamia macdonnellii) below the red hills in Kings Canyon, Watarrka, Australia

Lizard on a rock, frontal view of Slater's Ring-tailed Dragon (Ctenophorus slateri), Red Centre of Australia, Northern Territory

Green leaves of the desert grasstree (Xanthorrhoea thorntonii) with yellow flower stalk rising up into the sky, Northern Territory, Australia

Desert grasstree (Xanthorrhoea thorntonii) with flower stalk in Central Australia

Two Dromedary Camels (Camelus dromedarius) in Australian outback, Red Centre, Australia

View from the bottom of Standley Chasm into the sky above with rock walls on either side, West MacDonnell Ranges, Australia

Standley Chasm, Angkerle Atwatye, rock crevice in the West MacDonnell Ranges, Northern Territory, Australia

Waterhole at Ormiston Gorge with Eucalyptus trees, West MacDonnell Ranges, Red Centre of Australia

Woman with hat kneeling on a rock beside the waterhole at Glen Helen Gorge, West MacDonnell Ranges, Australia

Waterhole at Glen Helen Gorge, West MacDonnell Ranges, Australia

Lizard on a rock, Slater's Ring-tailed Dragon (Ctenophorus slateri), Red Centre of Australia, Northern Territory

Lizard on a rock, close-up of Slater's Ring-tailed Dragon (Ctenophorus slateri), Red Centre of Australia, Northern Territory

Eucalyptus tree in front of a red rock wall in the red centre of Australia, Watarrka National Park, Northern Territory

Flower of Sturt's Desert Rose (Gossypium sturtianum) with pollinating flies, Northern Territory, Australia

Namib desert with road in front of orange colored sand dunes, aerial view

Two black rhinoceros (Diceros bicornis) in acacia bushland, Namibia

Southern African Burrowing Scorpion (Opistophthalmus tumas) on red sand dune of Namib-Naukluft National Park, Namibia

South African Oryx antelope (Oryx gazella) with long straight horns, feeding on the sparse vegetation of a dry rocky plain, Namibia

South African Oryx antelope (Oryx gazella) with long straight horns, on a dry rocky plain, Namibia

Far-reaching view across the rocky Namib plains to the distant hills, Namibia

Sweeping red and orange sand dunes of the Namib desert with sparse vegetation, Namibia

Hot air balloon drifting through the sky in the first morning light over the Namib desert in Namibia, aerial view

At the foothills of the orange colored sand dunes of the Namib desert: hot air balloon above the roadside

Colorful red and orange sand dunes of the Namib desert with sparse vegetation, aerial view

Hot air balloon drifting over the Namib desert at dawn, Namibia

Namib desert, plains and orange colored sand dunes in the background, aerial view

Namib desert, plains with dry watercourses and orange colored sand dunes in the background, aerial view

Broad panorama of the Namib desert in Namibia with two hot air balloons starting into the sky in the first morning light.

Aerial view of the vast plains of the Namib desert with mountains in the morning mist, Namibia

Deadvlei, famous clay pan with dead camel thorn trees surrounded by red dunes, Namib-Naukluft Park, Namibia

Dusky sunrise over the Namibian desert, Namib-Naukluft National Park

Two black rhinoceros (Diceros bicornis), mother with adolescent calf, in Namibian bushland amongst acacia shrubs

Young black rhinoceros (Diceros bicornis) in Namibian bushland amongst acacias

Frontal view of male African Savannah Elephant (Loxodonta africana) in Nambian savannah, Namibia, Africa

Two African Savannah Elephants (Loxodonta africana) drinking at a waterhole, Namibia, Africa

Three African Savannah Elephants (Loxodonta africana) in Nambian savannah, Namibia, Africa

African Savannah Elephant (Loxodonta africana) drinking at a waterhole, Namibia, Africa

Southern warthogs (Phacochoerus africanus ssp. sundevallii) at a waterhole with Oryx (Oryx gazella) waiting in the background, Namibia

Common Ostrich (Struthio camelus) in Namibian bushland

Two giraffes (Giraffa giraffa angolensis) beside a tree in the Namibian grassland, Africa

Group of sleeping Cape fur seals (Arctocephalus pusillus) at Cape Cross, Namibia

Upper cascades of Mitchell Falls, flowing down over sandstone rocks in the Kimberleys, Western Australia

Lower pitcher of Nepenthes northiana, pitcher plant named after Marianne North, Bau region, Sarawak, Borneo

Red lower pitcher of Nepenthes northiana, Bau region, Sarawak, Borneo

Aerial view of the Australian outback in the morning mist, Red Centre, Northern Territory, Australia

Golden fishhook ants (Polyrhachis ypsilon) with conspicious hooked spines and golden sheen in natural habitat, Sarawak, Borneo

Single golden fishhook ant (Polyrhachis ypsilon) with its conspicious hooked spines and golden sheen in natural habitat, Sarawak, Borneo

Blister beetle (Horia debyi) on a leaf, Sarawak, Borneo

Pitcher of Nepenthes mirabilis var. echinostoma with red peristome, carnivorous pitcher plant on Borneo, Malaysia

Pitcher of the fanged pitcher plant (Nepenthes bicalcarata) with its two teeth on the underside of the lid, Sarawak, Borneo

Stick insect Prickly Haaniella (Haaniella echinata), on a leaf in natural habitat, Sarawak, Borneo

Black-jaw Huntsman (Heteropoda tetrica), Sarawak, Borneo

Broad rim on the pitcher of Nepenthes mirabilis var. echinostoma, carnivorous pitcher plant on Borneo, Malaysia

Pitchers of the carnivorous pitcher plant Nepenthes ampullaria on rocky terrain, natural habitat, Sarawak, Borneo

Pitchers of the carnivorous pitcher plant Nepenthes ampullaria growing on rocks, natural habitat, Sarawak, Borneo

Red pitchers of the carnivorous pitcher plant Nepenthes ampullaria on the forest floor, Sarawak, Borneo

Upper pitcher of Nepenthes stenophylla with ants, a carnivorous pitcher plant in natural habitat, Sarawak, Borneo

Long-tailed Macaque (Macaca fascicularis) sitting on a branch, female monkey sheltering her baby, Sarawak, Borneo

Lower pitcher of Nepenthes rafflesiana, carnivorous pitcher plant in natural habitat, Sarawak, Borneo

Male proboscis monkey (Nasalis larvatus) in a rainforest tree, Borneo, Malaysia

Green pitcher of Nepenthes albomarginata, carnivorous pitcher plant, Sarawak, Borneo

Foraging column of marching termites (Hospitalitermes) carrying lichen, Borneo, Malaysia

Marching termites (Hospitalitermes) carrying lichen, on a foraging expedition on the forest floor, Borneo, Malaysia

Male proboscis monkey (Nasalis larvatus) sitting in a rainforest tree, Borneo, Malaysia

Red-winged symbiotic Setocoris bug on a sundew leaf (Drosera collina), Western Australia

Symbiotic Setocoris bug on a sundew leaf (Drosera collina), Western Australia

Rosette of Drosera collina, a carnivorous sundew with sticky leaves, south-west Western Australia

Multi-colored symbiotic Setocoris bug on a sundew leaf (Drosera modesta), Western Australia

Bird orchid flower (Pterostylis barbata) in natural habitat, Western Australia

Adult plants of an Australian pygmy sundew (Drosera scorpioides), large group with red sticky leaves,

Setocoris bugs (larvae) living in symbiosis on the white sundew flower of Drosera andersoniana, natural habitat, Western Australia

Setocoris bugs living in symbiosis on a yellow sundew flower of Drosera subhirtella, natural habitat, Western Australia