A water catchment in the Coconino National Forest, Sunset Crater National Monument, Arizona, USA

A Crown-of-Thorns starfish (Acanthaster planci) on a badly damaged section of a coral reef in Gaaful Dhaalu atoll, in the faer south of the Maldives.

Terraced rice valley, Isalo National Park, Madagascar

Fishing nets at Dam Thanh Lam near Hue, Thua Thien Hue, Vietnam

Bull southern elephant seal (Mirounga leonina) on South Georgia Island, Southern Ocean

Cotopaxi Province, Ecuador

Irrigation canal in palm grove. Birkat Al Mouz, Al Dakhliya region, Falaj irrigation system (Falaj Al-Khatmeen), UNESCO, Oman, Arabian Peninsula

View towards Structure I at sunrise, Calakmul Archaeological Site, Campeche State, Mexico

An artificial pond for cattle called Rods Winter Camp Tank in the Kaibab National Forest of Arizona, USA

South African Penguin (Spheniscus demersus), Hertfordshire Zoo, United Kingdom

Boswellia sacra (frankincense) (olibanum-tree), Sultanate of Oman

Irrigation canal, Falaj irrigation system (Falaj Al-Khatmeen), UNESCO, palm grove, Birkat Al Mouz, Al Dakhliya region, Jebel Akhdar foothills, Oman

Olive trees in grove (orchard), Greece

Aerial of N´Djamena, capital of Chad and the Chari River, Chad

African forest elephant (Loxodonta cyclotis), Dzanga Bai, Dzanga Sangha National Park, UNESCO, Central African Republic

Pygmy woman extracting water from a tree branch, Dzanga Sangha National Park, UNESCO, Central African Republic

Pygmy man preparing the net for net hunting, Dzanga Sangha National Park, UNESCO, Central African Republic

Pygmy man going net hunting, Dzanga Sangha National Park, UNESCO, Central African Republic

Extremely dirty waste area in the Fadar Daurama Emir's palace, Daura Emirate, Katsina state, Nigeria

Adult male spruce (Franklin's) grouse (Falcipennis canadensis) near Brooks River, Katmai National Park, Alaska, United States of America

Adult brown bear (Ursus arctos) foraging for salmon at the Brooks River, Katmai National Park, Alaska, United States of America

Adult brown bear (Ursus arctos) foraging for salmon at the Brooks River, Katmai National Park, Alaska, United States of America

System of protection against invasion of desert sand in palm grove of Zagora, Draa River valley, Province of Zagora, Region Draa-Tafilalet, Morocco

Pineapple plantation, Sarapiqui, Costa Rica, Central America

Young man watering lettuce, garden and palm grove of Timia, Avdz?r, Niger, Western Africa

Market gardening nearby Luang Prabang, Laos

Greenland Lake reduced to a mud hole, Grand Canyon North Rim, UNESCO, Arizona, United States of America

Rana El Zein, Deputy Director at AFALULA, and White saxaul (Haloxylon persicum), Sharaan Nature Reserve, AlUla, Medina Province, Saudi Arabia

Palm plantation colonized by invasive Sodom apple plant (Calotropis procera), Sharaan Nature Reserve, AlUla, Medina Province, Saudi Arabia

Cow eating from a trash bin, Pushkar, Rajasthan, India

Guide and Ranger team of the Sharaan Nature Reserve, AlUla, Medina Province, Saudi Arabia

Pygmy man going net hunting, Dzanga Sangha National Park, UNESCO, Central African Republic

Aerial view of Punta Allen Sian Ka'an Reserve, Yucatan Peninsula, Mexico. Red lagoon near Boca Paila Bridge. In the language of the Mayan peoples who once inhabited this region, Sian Ka'an means Origin of the Sky. Located on the east coast of the Yucatán peninsula, this biosphere reserve contains tropical forests, mangroves and marshes, as well as a large marine section intersected by a barrier reef. It provides a habitat for a remarkably rich flora and a fauna comprising more than 300 species of birds, as well as a large number of the region's characteristic terrestrial vertebrates, which cohabit in the diverse environment formed by its complex hydrological system. Along its roughly 120 kilometres of coastline, the property covers over 400,000 hectares of land ranging from sea level to only ten m.a.s.l. The property boasts diverse tropical forests, palm savannah, one of the most pristine wetlands in the region, lagoons, extensive mangrove stands, as well as sandy beaches and dunes. The 120,000 hectares of marine area protect a valuable part of the Mesoamerican Barrier Reef and seagrass beds in the shallow bays. The lush green of the forests and the many shades of blue of the lagoons and the Caribbean Sea under a wide sky offer fascinating visual impressions.

Aerial view of Punta Allen Sian Ka'an Reserve, Yucatan Peninsula, Mexico. Red lagoon near Boca Paila Bridge. In the language of the Mayan peoples who once inhabited this region, Sian Ka'an means Origin of the Sky. Located on the east coast of the Yucatán peninsula, this biosphere reserve contains tropical forests, mangroves and marshes, as well as a large marine section intersected by a barrier reef. It provides a habitat for a remarkably rich flora and a fauna comprising more than 300 species of birds, as well as a large number of the region's characteristic terrestrial vertebrates, which cohabit in the diverse environment formed by its complex hydrological system. Along its roughly 120 kilometres of coastline, the property covers over 400,000 hectares of land ranging from sea level to only ten m.a.s.l. The property boasts diverse tropical forests, palm savannah, one of the most pristine wetlands in the region, lagoons, extensive mangrove stands, as well as sandy beaches and dunes. The 120,000 hectares of marine area protect a valuable part of the Mesoamerican Barrier Reef and seagrass beds in the shallow bays. The lush green of the forests and the many shades of blue of the lagoons and the Caribbean Sea under a wide sky offer fascinating visual impressions.

Aerial view of Punta Allen Sian Ka'an Reserve, Yucatan Peninsula, Mexico. Red lagoon near Boca Paila Bridge. In the language of the Mayan peoples who once inhabited this region, Sian Ka'an means Origin of the Sky. Located on the east coast of the Yucatán peninsula, this biosphere reserve contains tropical forests, mangroves and marshes, as well as a large marine section intersected by a barrier reef. It provides a habitat for a remarkably rich flora and a fauna comprising more than 300 species of birds, as well as a large number of the region's characteristic terrestrial vertebrates, which cohabit in the diverse environment formed by its complex hydrological system. Along its roughly 120 kilometres of coastline, the property covers over 400,000 hectares of land ranging from sea level to only ten m.a.s.l. The property boasts diverse tropical forests, palm savannah, one of the most pristine wetlands in the region, lagoons, extensive mangrove stands, as well as sandy beaches and dunes. The 120,000 hectares of marine area protect a valuable part of the Mesoamerican Barrier Reef and seagrass beds in the shallow bays. The lush green of the forests and the many shades of blue of the lagoons and the Caribbean Sea under a wide sky offer fascinating visual impressions.

Aerial view of Punta Allen Sian Ka'an Reserve, Yucatan Peninsula, Mexico. Red lagoon near Boca Paila Bridge. In the language of the Mayan peoples who once inhabited this region, Sian Ka'an means Origin of the Sky. Located on the east coast of the Yucatán peninsula, this biosphere reserve contains tropical forests, mangroves and marshes, as well as a large marine section intersected by a barrier reef. It provides a habitat for a remarkably rich flora and a fauna comprising more than 300 species of birds, as well as a large number of the region's characteristic terrestrial vertebrates, which cohabit in the diverse environment formed by its complex hydrological system. Along its roughly 120 kilometres of coastline, the property covers over 400,000 hectares of land ranging from sea level to only ten m.a.s.l. The property boasts diverse tropical forests, palm savannah, one of the most pristine wetlands in the region, lagoons, extensive mangrove stands, as well as sandy beaches and dunes. The 120,000 hectares of marine area protect a valuable part of the Mesoamerican Barrier Reef and seagrass beds in the shallow bays. The lush green of the forests and the many shades of blue of the lagoons and the Caribbean Sea under a wide sky offer fascinating visual impressions.

Aerial view of Punta Allen Sian Ka'an Reserve, Yucatan Peninsula, Mexico

Palms and old pier in Punta Allen Sian Ka'an Reserve, Yucatan Peninsula, Mexico. In the language of the Mayan peoples who once inhabited this region, Sian Ka'an means Origin of the Sky. Located on the east coast of the Yucatán peninsula, this biosphere reserve contains tropical forests, mangroves and marshes, as well as a large marine section intersected by a barrier reef. It provides a habitat for a remarkably rich flora and a fauna comprising more than 300 species of birds, as well as a large number of the region's characteristic terrestrial vertebrates, which cohabit in the diverse environment formed by its complex hydrological system. Along its roughly 120 kilometres of coastline, the property covers over 400,000 hectares of land ranging from sea level to only ten m.a.s.l. The property boasts diverse tropical forests, palm savannah, one of the most pristine wetlands in the region, lagoons, extensive mangrove stands, as well as sandy beaches and dunes. The 120,000 hectares of marine area protect a valuable part of the Mesoamerican Barrier Reef and seagrass beds in the shallow bays. The lush green of the forests and the many shades of blue of the lagoons and the Caribbean Sea under a wide sky offer fascinating visual impressions.

Moorea, French Polynesia, Society Islands, South Pacific. On a surface of about 280m² with vanilla plants grown on artificial guardians. This type of culture helps protect it from the assaults of the sun, birds and all kinds of pests

Bison Walking In The Early Morning Through The Snow, Elk Island National Park, Alberta, Canada

Bison (Bison Bison Athabascae) Grazing, Elk Island National Park, Alberta, Canada

Mongolian horsemen lead a troop of horses running in a meadow covered by snow, Bashang Grassland, Zhangjiakou, Hebei Province, Inner Mongolia, China

Dead Trees, Deadvlei, Sossusvlei, Namib Naukluft Park, Namib Desert, Namibia.

Group of the Steller's sea eagles (Haliaeetus pelagicus) on the pier in the port are fighting each other over prey. Shiretoko National Park. Shiretoko Peninsula. Hokkaido. Japan

Portrait of Steller's sea eagle (Haliaeetus pelagicus) close up. Shiretoko National Park. Shiretoko Peninsula. Hokkaido. Japan

Portrait of Steller's sea eagle (Haliaeetus pelagicus) close up. Shiretoko National Park. Shiretoko Peninsula. Hokkaido. Japan

Huchet Current Nature Reserve and Dunes-du-Sud State Forest, Moliets Beach, Landes, Nouvelle Aquitaine, France

Huchet Current Nature Reserve and Dunes-du-Sud State Forest, Moliets Beach, Landes, Nouvelle Aquitaine, France

Masai giraffe drinking from a waterhole by night, Shompole wilderness, Shompole Community, Kenya, East Africa, Africa

Group of Striped Mongoose;Mungos mungo) arriving at a watering hole, Shompole wilderness, Shompole Community, Kenya, East Africa, Africa

Group of Striped Mongoose;Mungos mungo) arriving at a watering hole, Shompole wilderness, Shompole Community, Kenya, East Africa, Africa

Masai giraffe drinking from a waterhole by night, Shompole wilderness, Shompole Community, Kenya, East Africa, Africa

Red-eyed treefrog;Agalychnis callidryas) mating, Costa Rica

Bedouin preparing tea and cooking bread in a traditional way. Wadi Rum Desert;Uadi Rum). World Heritage Site since 2011;Unesco). Jordan.

Shrubby savannah landscape with Masai giraffe;Giraffa camelopardalis tippelskirchi) drinking from a waterhole, Shompole wilderness, Shompole Community, Kenya, East Africa, Africa

White rhinoceros or square-lipped rhinoceros;Ceratotherium simum). One of five species of rhino that still exist. It has a wide mouth used for grazing and is the most social of all rhino. Madikwe Game Reserve. North West Province. South Africa

White-tailed mongoose;Ichneumia albicauda), comes to drink in a pond, at night, Shompole wilderness, Shompole Community, Kenya, East Africa, Africa

Blue wildebeest;Connochaetes taurinus), drinking from a waterhole, Shompole wilderness, Shompole Community, Kenya, East Africa, Africa

White rhinoceros;rhino) or square-lipped rhinoceros;Ceratotherium simum) at a waterhole. Phinda / Munyawana / Zuka Game Reserve. KwaZulu Natal. South Africa

Lioness;Panthera leo) drinking from a waterhole by night, Shompole wilderness, Shompole Community, Kenya, East Africa, Africa

The Treasury;Al-Khazneh). View that the traveler encounters when emerging from the Siq, the 1.5 km gorge that must be traveled to reach the Treasury. Jordan.

Arche de Tortisse (2550 m), Mercantour National Park, Alpes-Maritimes, France

Hike to Lac Palluel (2472 m) from the hamlet of Dormillouse, Freissinieres, Ecrins National Park, Hautes-Alpes, France

Meije glacier lift (1450 - 3200m) with Les Terrasses in the background, one of the four hamlets of La Grave, upper Romanche valley, Hautes-Alpes, France

Les Terrasses, one of the four hamlets of La Grave, upper Romanche valley, Hautes-Alpes, France

Hiker contemplating the Lac du Lauvitel (1530 m) on the GR 54 long-distance hiking trail, Tour de l'Oisans et des Ecrins, Veneon valley, Ecrins National Park, Isere, France

Orientation post at Lac Lauvitel (1530 m) on the GR 54 Grande Randonnee trail, Tour de l'Oisans et des Ecrins, Veneon valley, Ecrins National Park, Isere, France

Rio Tiputini and rainforest canopy, Yasuni Park, Ecuador

King eider duck (Somateria spectabilis) adult male in breeding plumage on winter ice floes during a snow shower in Varanger, Norway

Wreck of the Boga, patrol vessel used by the Indonesian government voluntarily sunk in September 2012, to provide additional wreckage for diving in the area to become an artificial reef and allow diving to develop in Kubu. The wreck now lies between 13 and 31m, with the bow just a few fin strokes from the shore. The current can be strong at this site. Tulamben, Bali, Indonesia.

Wreck of the Boga, patrol vessel used by the Indonesian government voluntarily sunk in September 2012, to provide additional wreckage for diving in the area to become an artificial reef and allow diving to develop in Kubu. The wreck now lies between 13 and 31m, with the bow just a few fin strokes from the shore. The current can be strong at this site. Tulamben, Bali, Indonesia.

Wreck of the Boga, patrol vessel used by the Indonesian government voluntarily sunk in September 2012, to provide additional wreckage for diving in the area to become an artificial reef and allow diving to develop in Kubu. The wreck now lies between 13 and 31m, with the bow just a few fin strokes from the shore. The current can be strong at this site. Tulamben, Bali, Indonesia.

Santa Luzia beach, Cabo Verde

Waves hitting the Wimereux dyke during storm Pierrick, Cote d'Opale, Pas-de-Calais, France

Pertuis de Maumusson, Ile d'Oleron, Wild coast, Charente-Maritime, France

Waves on Vieux Phare beach, La Temblade, Charente-Maritime, France

Anchorage bay, Abel Tasman National Park, Tasman, Southern Island, New-Zealand

Flight of waders above a fishing boat with tourists on board for bird watching. Banc d'Arguin National Park. Mauritania.

Fish drying in the sun. Iwik. Banc d'Arguin National Park. Mauritania.

View of the Azougui oasis. Azougui cultural landscape. Atar. Adrar lateau. Mauritania

Moorish man wearing a blue draa (traditionnal clothe) near the mosque of Chinguetti. Ancient ksour of Ouadane, Chinguetti, Tichitt and Oualata. Adrar. Mauritania

City and oasis of Chinguetti almost under the sand of the desert. Dunes of the Adrar desert near Chinguetti. Ancient ksour of Ouadane, Chinguetti, Tichitt and Oualata. Adrar. Mauritania

City and oasis of Chinguetti almost under the sand of the desert. Dunes of the Adrar desert near Chinguetti. Ancient ksour of Ouadane, Chinguetti, Tichitt and Oualata. Adrar. Mauritania

Mauritanian travel guide making a tagella (local bread) at a wood fire at a camp in the desert. Chinguetti. Ancient ksour of Ouadane, Chinguetti, Tichitt and Oualata. Adrar. Mauritania

Mauritanian travel guide making a tagella (local bread) at a wood fire at a camp in the desert. Chinguetti. Ancient ksour of Ouadane, Chinguetti, Tichitt and Oualata. Adrar. Mauritania

Mauritanian travel guide making fire at night at a camp in the desert.. Chinguetti. Ancient ksour of Ouadane, Chinguetti, Tichitt and Oualata. Adrar. Mauritania

Mauritanian travel guide making tea at night at a camp in the desert. Chinguetti. Ancient ksour of Ouadane, Chinguetti, Tichitt and Oualata. Adrar. Mauritania

Jatiluwih rice field. Munbduk and Ubud region. Bali. Indonesia.

Saline ponds at the salt works next to Almadraba de Monteleva. The reddish colour depends on the level of salinity and is directly caused by the algae Dunaliella salina and brine shrimp. Aerial view. Drone shot. Nature Reserve Cabo de Gata-Nijar, Almería province, Andalusia, Spain.

The Playa de los Muertos (beach of the dead). Aerial view. Drone shot. Nature Reserve Cabo de Gata-Nijar, Almería province, Andalusia, Spain.

King Eider (Somateria spectabilis) adult male in nuptial plumage on the water in winter in Varanger, Norway

Wreck of the Boga, patrol vessel used by the Indonesian government voluntarily sunk in September 2012, to provide additional wreckage for diving in the area to become an artificial reef and allow diving to develop in Kubu. The wreck now lies between 13 and 31m, with the bow just a few fin strokes from the shore. The current can be strong at this site. Tulamben, Bali, Indonesia.

Wreck of the Boga, patrol vessel used by the Indonesian government voluntarily sunk in September 2012, to provide additional wreckage for diving in the area to become an artificial reef and allow diving to develop in Kubu. The wreck now lies between 13 and 31m, with the bow just a few fin strokes from the shore. The current can be strong at this site. Tulamben, Bali, Indonesia.

Santa Luzia island, Cabo Verde

Waves hitting the Wimereux dyke during storm Pierrick, Cote d'Opale, Pas-de-Calais, France

Wild Coast and Coubre lighthouse, Charente-Maritime, France

Tekapo lake, Canterbury, Southern alps, Southern Island, New-zealand

Common Impala (Aepyceros melampus) horned male portrait isolated in natural background in Kruger National park, South Africa

Common Impala (Aepyceros melampus) with oxpecker silhouette sunrise light in Kruger National park, South Africa

Leopard tortoise (Stigmochelys pardalis) drinking front view in waterhole in Kruger national park, South Africa