Kevin Schafer / Bumblebee (Bombus sp) on flower, Juneau, Alaska

Chase Dekker / Humpback Whale (Megaptera novaeangliae) pod gulp feeding on Northern Anchovy (Engraulis mordax), Monterey Bay, California

Chase Dekker / African Lion (Panthera leo) cub, Masai Mara, Kenya

Chase Dekker / Lesser Flamingo (Phoenicopterus minor) wading, Amboseli National Park, Kenya

Chase Dekker / Lesser Flamingo (Phoenicopterus minor) pair fighting, Amboseli National Park, Kenya

Gerry Ellis / Chimpanzee (Pan troglodytes) orphan Larry playing in tree, Ape Action Africa, Mefou Primate Sanctuary, Cameroon

Gerry Ellis / Chimpanzee (Pan troglodytes) orphan Larry, Ape Action Africa, Mefou Primate Sanctuary, Cameroon

Gerry Ellis / Chimpanzee (Pan troglodytes) orphan Larry scratching, Ape Action Africa, Mefou Primate Sanctuary, Cameroon

Winfried Wisniewski / White Stork (Ciconia ciconia) on nest, Extremadura, Spain

Jami Tarris / Polar Bear (Ursus maritimus) cooling off, Spitsbergen, Svalbard, Norway

Jami Tarris / Polar Bear (Ursus maritimus) hunting Bearded Seal (Erignathus barbatus) pup, Spitsbergen, Svalbard, Norway

Jami Tarris / Polar Bear (Ursus maritimus) on ice floe, Spitsbergen, Svalbard, Norway

Jami Tarris / Polar Bear (Ursus maritimus) on shore, Spitsbergen, Svalbard, Norway

Jami Tarris / Arctic Fox (Alopex lagopus) running in snow, Spitsbergen, Svalbard, Norway

Juergen & Christine Sohns / African Lion (Panthera leo) male, Tswalu Game Reserve, South Africa

Juergen & Christine Sohns / African Lion (Panthera leo) juvenile male, Mountain Zebra National Park, South Africa

Juergen & Christine Sohns / Meerkat (Suricata suricatta) pregnant female and juveniles on alert, Tswalu Game Reserve, South Africa

Juergen & Christine Sohns / Meerkat (Suricata suricatta) pregnant female and juveniles on alert, Tswalu Game Reserve, South Africa

Juergen & Christine Sohns / Meerkat (Suricata suricatta) pair on alert, Tswalu Game Reserve, South Africa

Juergen & Christine Sohns / Meerkat (Suricata suricatta) pair on alert, Tswalu Game Reserve, South Africa

Juergen & Christine Sohns / Meerkat (Suricata suricatta) pair on alert, Tswalu Game Reserve, South Africa

Juergen & Christine Sohns / Meerkat (Suricata suricatta) pair on alert, Tswalu Game Reserve, South Africa

Juergen & Christine Sohns / Meerkat (Suricata suricatta) on alert, Tswalu Game Reserve, South Africa

Juergen & Christine Sohns / Meerkat (Suricata suricatta) on alert, Tswalu Game Reserve, South Africa

Juergen & Christine Sohns / Meerkat (Suricata suricatta) on alert, Tswalu Game Reserve, South Africa

Juergen & Christine Sohns / Meerkat (Suricata suricatta) scratching itself, Tswalu Game Reserve, South Africa

Juergen & Christine Sohns / Mountain Zebra (Equus zebra), Mountain Zebra National Park, South Africa

Juergen & Christine Sohns / African Wild Dog (Lycaon pictus) group attacking Cape Warthog (Phacochoerus aethiopicus), Tswalu Game Reserve, South Africa

Anup Shah / Olive Baboon (Papio anubis) male with three month old young, Gombe National Park, Tanzania

Anup Shah / Eastern Chimpanzee (Pan troglodytes schweinfurthii) four year old infant male, named Gizmo, foraging for insects in log, Gombe National Park, Tanzania

Richard Du Toit / Greater Double-collared Sunbird (Nectarinia afra) male on Pincushion (Leucospermum sp) flower, Western Cape, South Africa

Heike Odermatt / Walrus (Odobenus rosmarus) on ice floe, Hinlopen Strait, Svalbard, Norway

Heike Odermatt / Brunnich's Guillemot (Uria lomvia) nesting colony on cliff, Alkefjellet, Hinlopen Strait, Svalbard, Norway

Heike Odermatt / Walrus (Odobenus rosmarus) on ice floe, Svalbard, Norway

Heike Odermatt / Walrus (Odobenus rosmarus) climbing on ice floe, Svalbard, Norway

Heike Odermatt / Bearded Seal (Erignathus barbatus) on ice floe, Magdalenefjorden, Svalbard, Norway

Martin Willis / Victoria's Riflebird (Ptiloris victoriae) male in courtship display, Atherton Tableland, Queensland, Australia. Sequence 2 of 3

Martin Willis / Splendid Fairywren (Malurus splendens) female and male, Queensland, Australia

Martin Willis / Red-collared Lorikeet (Trichoglossus rubritorquis) feeding on flower nectar, Kimberley, Western Australia, Australia

Martin Willis / Budgerigar (Melopsittacus undulatus) father with begging chick at nest cavity, Queensland, Australia

Suzi Eszterhas / Golden Lion Tamarin (Leontopithecus rosalia), Atlantic Forest, Brazil

Kevin Schafer / Bald Eagle (Haliaeetus leucocephalus) pair, Adak Island, Aleutian Islands, Alaska

Kevin Schafer / Honey Bee (Apis mellifera) on flower, Alaska

Chase Dekker / Humpback Whale (Megaptera novaeangliae) pod gulp feeding on Northern Anchovy (Engraulis mordax) near sailboat, Monterey Bay, California

Chase Dekker / Humpback Whale (Megaptera novaeangliae) gulp feeding on Northern Anchovy (Engraulis mordax), Monterey Bay, California

Chase Dekker / Humpback Whale (Megaptera novaeangliae) gulp feeding on Northern Anchovy (Engraulis mordax), Monterey Bay, California

Chase Dekker / Humpback Whale (Megaptera novaeangliae) gulp feeding on Northern Anchovy (Engraulis mordax) near whale watching boat, Monterey Bay, California

Chase Dekker / Humpback Whale (Megaptera novaeangliae) pod gulp feeding on Northern Anchovy (Engraulis mordax), Monterey Bay, California

Chase Dekker / Humpback Whale (Megaptera novaeangliae) gulp feeding on Northern Anchovy (Engraulis mordax), Monterey Bay, California

Chase Dekker / Humpback Whale (Megaptera novaeangliae) pod gulp feeding on Northern Anchovy (Engraulis mordax), Monterey Bay, California

Chase Dekker / Humpback Whale (Megaptera novaeangliae) pair gulp feeding on Northern Anchovy (Engraulis mordax) near sailboat, Monterey Bay, California

Chase Dekker / Humpback Whale (Megaptera novaeangliae) pod gulp feeding on Northern Anchovy (Engraulis mordax) near tourists, Monterey Bay, California

Chase Dekker / Humpback Whale (Megaptera novaeangliae) male, Tonga

Chase Dekker / Humpback Whale (Megaptera novaeangliae) mother and calf, Tonga

Chase Dekker / African Elephant (Loxodonta africana) herd in flooded savanna, Amboseli National Park, Kenya

Chase Dekker / African Elephant (Loxodonta africana) herd, Amboseli National Park, Kenya

Chase Dekker / African Elephant (Loxodonta africana) herd in savanna near storm, Masai Mara, Kenya

Chase Dekker / Cheetah (Acinonyx jubatus) female on termite mound, Masai Mara, Kenya

Chase Dekker / African Elephant (Loxodonta africana) bull in savanna, Amboseli National Park, Kenya

Chase Dekker / Cheetah (Acinonyx jubatus) male and tourists, Masai Mara, Kenya

Chase Dekker / Cheetah (Acinonyx jubatus) female scent-marking, Masai Mara, Kenya

Chase Dekker / Cheetah (Acinonyx jubatus) female, Masai Mara, Kenya

Chase Dekker / Zebra (Equus quagga) males fighting, Masai Mara, Kenya

Chase Dekker / African Lion (Panthera leo) male, Masai Mara, Kenya

Chase Dekker / African Elephant (Loxodonta africana) herd grazing in savanna at sunset, Masai Mara, Kenya

Chase Dekker / African Lion (Panthera leo) cub, Masai Mara, Kenya

Chase Dekker / African Lion (Panthera leo) cub, Masai Mara, Kenya

Chase Dekker / African Lion (Panthera leo) cub, Masai Mara, Kenya

Chase Dekker / African Lion (Panthera leo) female near Blue Wildebeest (Connochaetes taurinus) herd, Masai Mara, Kenya

Chase Dekker / Cheetah (Acinonyx jubatus) juvenile on termite mound, Masai Mara, Kenya

Chase Dekker / Hippopotamus (Hippopotamus amphibius) juvenile, Lake Naivasha, Kenya

Chase Dekker / Ostrich (Struthio camelus), Amboseli National Park, Kenya

Chase Dekker / African Elephant (Loxodonta africana) herd in savanna, Amboseli National Park, Kenya

Chase Dekker / Vervet Monkey (Chlorocebus pygerythrus) mother and young, Amboseli National Park, Kenya

Chase Dekker / Vervet Monkey (Chlorocebus pygerythrus) mother and young, Amboseli National Park, Kenya

Chase Dekker / Ostrich (Struthio camelus), Amboseli National Park, Kenya

Chase Dekker / Lesser Flamingo (Phoenicopterus minor) wading, Amboseli National Park, Kenya

Chase Dekker / Lesser Flamingo (Phoenicopterus minor), Amboseli National Park, Kenya

Chase Dekker / Lesser Flamingo (Phoenicopterus minor) pair displaying in dominance fight, Amboseli National Park, Kenya

Chase Dekker / African Elephant (Loxodonta africana) herd, Amboseli National Park, Kenya

Chase Dekker / African Elephant (Loxodonta africana) herd and Cattle Egrets (Bubulcus ibis), Amboseli National Park, Kenya

Chase Dekker / African Elephant (Loxodonta africana) herd, Amboseli National Park, Kenya

Chase Dekker / African Elephant (Loxodonta africana) mother and calf and Cattle Egrets (Bubulcus ibis), Amboseli National Park, Kenya

Chase Dekker / African Elephant (Loxodonta africana) pair and Cattle Egrets (Bubulcus ibis), Amboseli National Park, Kenya

Chase Dekker / African Elephant (Loxodonta africana) herd with Cattle Egrets (Bubulcus ibis), Amboseli National Park, Kenya

Chase Dekker / African Elephant (Loxodonta africana) females and calf with Cattle Egrets (Bubulcus ibis), Amboseli National Park, Kenya

Chase Dekker / Humpback Whale (Megaptera novaeangliae) calf, Tonga

Chase Dekker / Humpback Whale (Megaptera novaeangliae) mother and calf, Tonga

Chase Dekker / Moose (Alces alces) bull, Grand Teton National Park, Wyoming

Gerry Ellis / Chimpanzee (Pan troglodytes) orphan Daphne playing in trees, Ape Action Africa, Mefou Primate Sanctuary, Cameroon

Gerry Ellis / Chimpanzee (Pan troglodytes) orphan Larry, Ape Action Africa, Mefou Primate Sanctuary, Cameroon

Gerry Ellis / Orangutan (Pongo pygmaeus) male being released after being rescued from 2015 fires, Gunung Palung National Park, West Kalimantan, Borneo, Indonesia

Gerry Ellis / Conservationist, Abwe Egong, in giant rainforest buttress root, Ebo Wildlife Reserve, Cameroon

Gerry Ellis / Sarcophrynium (Sarcophrynium prionogonium) a climate change research plant being monitored by conservationist, Abwe Egong, Ebo Wildlife Reserve, Cameroon

Gerry Ellis / Rainforest tree being logged to clear area for oil palm plantation, western Cameroon

Gerry Ellis / Chimpanzee (Pan troglodytes) orphan clinging to keeper while feeding, Mefou Primate Sanctuary, Cameroon