Stefan Christmann / Emperor penguin (Aptenodytes forsteri) breeding colony, males huddling on sea ice during polar night, incubating eggs, ice shelf in background. Atka Bay, Antarctica. July 2017.
Stefan Christmann / Emperor penguin (Aptenodytes forsteri) colony huddled during polar night, males incubating eggs. Atka Bay, Antarctica. July 2017.
Stefan Christmann / Emperor penguin (Aptenodytes forsteri) colony, males huddling whilst incubating eggs. Atka Bay, Antarctica. July.
Stefan Christmann / Emperor penguin (Aptenodytes forsteri) colony huddling, males incubating eggs, on sea ice under full moon in polar night. Atka Bay, Antarctica. July 2017.
Stefan Christmann / Emperor penguin (Aptenodytes forsteri) males in breeding colony incubating eggs, huddling during winter storm. Penguins on outside repositioning themselves to gain protection from weather. Atka Bay, A...
Stefan Christmann / Emperor penguin (Aptenodytes forsteri) males in breeding colony huddling during winter storm. Atka Bay, Antarctica. July.
Sven Zacek / Dandelion (Taraxacum officinale), a field of many seedheads highlighted at sunset. Karula National Park, Valgamaa, Southern Estonia. June 2017.
Bence Mate / Great white egret (Ardea alba) group of three in winter, Kiskunsag National Park, Hungary. Winner of the Bird Category of Nature Photographer of the Year Awards 2018.
Tony Wu / Indo-Pacific sailfish (Istiophorus platypterus) in feeding frenzy, with the remains of a previously large school of sardines (Sardina sp) in background. Isla Mujeres, Cancun, Mexico.
Sylvain Cordier / Monarch butterfly (Danaus plexippus), wintering from November to March in Oyamel pine forests (Abies religiosa) Monarch Butterfly Biosphere Reserve, Mexico.
Alex Mustard / Bengal snapper (Lutjanus bengalensis), Bannerfish (Heniochus diphreutes) and Fusiliers (Caesio sp.) diving towards coral reef to avoid predators. North Ari Atoll, Maldives. Indian Ocean.
Alex Mustard / RF - Bannerfish (Heniochus diphreutes) schooling in coral reef. Long exposure. North Male Atoll, Maldives. Indian Ocean. (This image may be licensed either as rights managed or royalty free.)
Theo Bosboom / Large group of Common blue damselflies (Enallagma cyathigerum) including mating couples - on stems of grass, Hondenven, Tubbergen, The Netherlands. June.
Paul Williams / Budgerigars (Melopsittacus undulatus) flocking to find water, Northern Territory, Australia
Nick Upton / Common swifts (Apus apus) flying overhead, Wiltshire, UK, June. Digital composite image.
Jack Dykinga / Sandhill cranes (Grus canadensis) flying in to land at sunset in golden light, Bosque del Apache National Wildlife Refuge, New Mexico, USA, December.
Claudio Contreras / Caribbean Flamingo (Phoenicopterus ruber) chick crèche in front of attentive adult flamingo group, breeding colony, Ria Lagartos Biosphere Reserve, Yucatan Peninsula, Mexico, June, Finalist in the Po...
Claudio Contreras / Aerial view of Caribbean Flamingo (Phoenicopterus ruber) breeding colony, Ria Lagartos Biosphere Reserve, Yucatan Peninsula, Mexico, May, Finalist in the Portfolio Category of the Terre Sauvage Nature...
Jack Dykinga / Snow geese (Chen caerulescens) large flock with some landing, Bosque del Apache, New Mexico, USA, December.
Jack Dykinga / Sandhill cranes (Grus canadensis) and Snow geese (Chen caerulescens) Bosque del Apache National Wildlife Refuge, New Mexico, USA, December.
Inaki Relanzon / Gentoo penguins (Pygoscelis papua) on the beach at sunset, Sea Lion Island, Falkland Islands.
Espen Bergersen / Aerial photo of a school of Atlantic herring (Clupea harengus) in shallow waters with both Humpback whales (Megaptera novaenliae) and Killer whales (Orcinus orca) feeding, coast of Kvaloya, Norway Jan...
Alex Mustard / Brandt's cormorant (Phalacrocorax penicillatus) hunts for a meal in a school of Pacific chub mackerel (Scomber japonicus) beneath an oil rig. Eureka Rig, Los Angeles, California, USA, September
Tony Wu / Killer whale / Orca (Orcinus orca) large adult male stalking a large school of Herring (Clupea harengus) in shallow water, Norway, February
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...
Alex Mustard / Brandt's cormorant (Phalacrocorax penicillatus) hunts for a meal in a school of Pacific chub mackerel (Scomber japonicus), beneath an oil rig. Eureka Rig, Los Angeles, California, United States of Ame...
Fiona Rogers / Mountain gorilla (Gorilla gorilla beringei) silverback male feet, member of 'Humba' group. Virunga National Park, Democratic Republic of Congo, March.
Yashpal Rathore / Demoiselle crane (Anthropoides virgo) low angle fisheye perspective of feeding cranes. Khichan, Western Rajasthan, India. February, 2015
Yashpal Rathore / Demoiselle crane (Anthropoides virgo) resting on sand dunes during winter migration, Khichan, Western Rajasthan, India. March.
Yashpal Rathore / Demoiselle crane (Anthropoides virgo) low angle view of birds flying and landing near the chugga ghar (bird feeding enclosure ) in Khichan Village, durin their annual migration. Western Rajasthan, Ind...
Yashpal Rathore / Low angle view of Demoiselle crane (Anthropoides virgo) flying and feeding during winter migration. Khichan, Western Rajasthan, India. December.
Klein & Hubert / Herd of Rove goats (Capra aegagrus hircus) walking to feeding grounds, Provence, France.
Tony Wu / Sperm whales (Physeter macrocephalus) large group gathering together, rubbing together to shed skin, interacting and defecating. Indian Ocean, March.
Tony Wu / Aggregation of Sperm whales (Physeter macrocephalus) engaged in social activity. Indian Ocean, March.
Alex Mustard / Aggregation of Golden jellyfish (Mastigias sp.) in a marine lake in Palau, the golden colour of this species comes from symbiotic algae in its tissues. Jellyfish Lake, Eil Malk island, Rock Islands, P...
Floris van Breugel / Monarch butterflies (Danaus plexippus) over winter on Eucalyptus and Monterey Cypress trees near Pismo Beach, San Luis, California, USA December.. When temperatures warm up enough, they will embark on...
Pal Hermansen / Eider ducks (Somateria molissima) flock taking off from sea, Trondelag, Norway, January.