1112-10974 - Tourist photographing a wild Galapagos giant tortoise (Geochelone elephantopus) feeding on the upslope grasslands of Santa Cruz Island, Galapagos, UNESCO World Heritage Site, Ecuador, South America

1112-10777 - Adelie penguin (Pygoscelis adeliae) on ice floe with leopard seal at Brown Bluff, Antarctica, Polar Regions

1112-10451 - Leucistic caused by lack of melanin, or blond Antarctic fur seal pup (Arctocephalus gazella) on South Georgia, Polar Regions

1112-10434 - Antarctic fur seal pup (Arctocephalus gazella) near the abandoned whaling station at Stromness Bay on South Georgia, Polar Regions

1112-10411 - Antarctic fur seal pup (Arctocephalus gazella) on Salisbury Plain on South Georgia, Southern Ocean, Polar Regions

1184-13263 - Polar bear (Ursus Maritimus) on Axel Heiberg island, Nunavut, Canadian Arctic, Canada, North America

1112-10232 - An introduced adult cane toad (Rhinella marina), at night on the Volivoli Resort grounds on Viti Levu, Fiji, South Pacific, Pacific

1112-10228 - Guests from the Lindblad Expeditions ship National Geographic Sea Bird during Zodiac operations near a feeding sea otter in Southeast Alaska, United States of America, North America

1112-10212 - A curious young polar bear (Ursus maritimus) approaches the National Geographic Explorer in the Svalbard Archipelago, Norway, Arctic, Europe

1112-10207 - A curious young polar bear (Ursus maritimus) approaches the National Geographic Explorer in the Svalbard Archipelago, Norway, Arctic, Europe

1112-10077 - Snorkeler with Galapagos sea lion (Zalophus wollebaeki) underwater in the Galapagos Island Archipelago, UNESCO World Heritage Site, Ecuador, South America

1112-9944 - Adult yellow warbler (Dendroica petechia aureola) in the Galapagos Island Archipelago, UNESCO World Heritage Site, Ecuador, South America

1112-9902 - The endemic Galapagos marine iguana (Amblyrhynchus cristatus) in the Galapagos Island Archipelago, UNESCO World Heritage Site, Ecuador, South America

1112-9716 - Adult male polar bear (Ursus maritimus) on multi-year ice floes in Franz Josef Land, Russia, Arctic Ocean, Eurasia

1112-9676 - Adult bull killer whale (Orcinus orca) surfacing in Glacier Bay National Park, Southeast Alaska, United States of America, Pacific Ocean, North America

1112-9635 - An adult bull killer whale (Orcinus orca) surfacing in Johnstone Strait, British Columbia, Canada, Pacific Ocean, North America

1112-9629 - A pod of Pacific white-sided dolphins (Lagenorhynchus obliquidens) leaping and surfacing in Johnstone Strait, British Columbia, Canada, North America

1112-9491 - Adult bull southern elephant seal (Mirounga leonina) fleeing from another male challenger at Gold Harbour, South Georgia, Polar Regions

1112-9380 - Imperial Shag (Phalacrocorax atriceps), pair exhibiting courtship behavior on New Island in the Falkland Islands, South America

1112-9347 - A large pod of Gerlache Strait type B killer whales (Orcinus orca), traveling and socializing in Gerlache Strait, Antarctica, Polar Regions

741-6613 - An African elephant (Loxodonta africana) chases away a lion (Panthera leo) resting along its path, Savuti, Chobe National Park, Botswana, Africa

1116-53439 - View taken from behind of silhouettes of two blue wildebeest (Connochaetes taurinus) standing on the savanna watching a cheetah (Acinonyx jubatus) pass by, Serengeti National Park, Tanzania, Africa

1116-53371 - Close-up portrait of a young male lion (Panthera leo leo) lowering head, Serengeti National Park, Tanzania, Africa

1116-53318 - Close-up portrait of a Canada Lynx (Lynx canadensis) looking at the camera through the branches of a Southcentral Alaska alder thicket. Lynx populations are closely linked to booms and busts in the numbers of their main prey the snowshoe hare, Alaska, United States of America

1116-53312 - Portrait of a black bear (Ursus americanus) pausing on a mountainside from feeding on lowbush cranberries and looking at the camera on a mid-October afternoon in Southcentral Alaska's Chugach Mountains, Alaska, United States of America

1116-53301 - Portrait of a sunlit, wolf (Canis lupus) standing in the brush in the snow, Churchill, Manitoba, Canada

1116-53299 - Portrait of a polar bear (Ursus maritimes) standing in the snow looking at the camera, Churchill, Manitoba, Canada

1116-53258 - Portrait of a black wolf (Canis Lupus) in the wild looking at the camera from atop a snowbank, Haines Junction, Yukon, Canada

1116-53123 - Close-up portrait of Bengal tiger (Panthera tigris tigris) lying down in the grass, watching the camera, Madhya Pradesh, India

1116-53121 - Portrait of Bengal tiger (Panthera tigris tigris) lying beside waterhole, watching camera, Madhya Pradesh, India

1116-53120 - Portrait of Bengal tiger (Panthera tigris tigris) lying beside waterhole, watching camera, Madhya Pradesh, India

1116-53119 - Portrait of Bengal tiger (Panthera tigris tigris) lying on ground amongst roots in forest, looking at the camera, Madhya Pradesh, India

1116-53079 - Coyote (Canis latrans) walking across a wintry landscape near Val Marie, Saskatchewan, Canada

1116-53454 - Portrait of a bull moose (Alces alces) walking through an alpine meadow late in the rut in Southcentral Alaska's Chugach State Park, Alaska, United States of America

1112-8825 - California gray whale calf (Eschrictius robustus), being touched by tourist in San Ignacio Lagoon, Baja California, Mexico, North America

1112-8823 - California gray whale calf (Eschrictius robustus), with excited tourists in San Ignacio Lagoon, Baja California, Mexico, North America

1112-8820 - California gray whale calf (Eschrictius robustus), with excited tourists in San Ignacio Lagoon, Baja California, Mexico, North America

1112-8816 - Adult California gray whale (Eschrictius robustus), near boat in San Ignacio Lagoon, Baja California, Mexico, North America

743-2222 - White rhino (Ceratotherium simum) bulls in confrontation, Zimanga private game reserve, KwaZulu-Natal, South Africa, Africa

1382-192 - Canoe trip with swans on Lake Srovinaitis around Ginuciai, Aukstaitija National Park, Lithuania, Europe

1116-52883 - Portrait of a young, male lion (Panthera leo) standing on savanna, staring at the camera, licking his lips, Laikipia, Kenya

1116-52881 - Portrait of a male lion (Panthera leo) standing among bushes, looking mournful at the camera, Laikipia, Kenya

1116-52870 - Mono, close-up portrait of a Cape Buffalo (Syncerus caffer) standing, eyeing camera in Segera, Segera, Laikipia, Kenya

759-13194 - Tourist observes Robber Crab, Birgus latro, Christmas Island, Australia

1116-49660 - Encounters with Hawaiian monk seals (Monachus schauinslandi) (endemic and endangered) are few and far between. Here a monk seal shares a patch of sand with a Green sea turtle (Chelonia mydas), also an endangered species, off Maui, Maui, Hawaii, United States of America

1116-39967 - A commercial whale shark encounter with a feeder above on a canoe and a Whale Shark (Rhiniodon typus) below. This is the world's largest species of fish, Oslob, Philippines

1116-39964 - A commercial whale shark encounter with a feeder above on a canoe and a Whale Shark (Rhiniodon typus) below. This is the world's largest species of fish, Oslob, Philippines

1116-39966 - A commercial whale shark encounter with a feeder above on a canoe and a Whale Shark (Rhiniodon typus) below. This is the world's largest species of fish, Oslob, Philippines

1116-31366 - Hawaii, Underwater encounters with Hawaiian monk seals (Monachus schauinslandi), endemic and endangered, are few and far between.

1116-31365 - Hawaii, Underwater encounters with Hawaiian monk seals (Monachus schauinslandi), endemic and endangered, are few and far between.

908-172 - Cuttlefish (Sepia officinalis) Two mating head to head within minutes of first encounter. Babbacombe, Torquay, South Devon, UK (RR)

930-88 - A heavily scarred dorsal fin of a Bottlenose Dolphin (Tursiops truncatus) tells of many encounters, some violent, with other dolphins in the Moray Firth, Scotland

988-192 - Marine wildlife-watching boat. Encounter with bottlenose dolphins (Tursiops truncatus). Hebrides, Scotland

1036-257 - Free diving with Atlantic spotted dolphins (Stenella frontalis) in clear waters off Island of Bimini. Here dolphins come to rest and socialist between feeding sessions. Isla

832-22634 - Cleland Wildlife Park, girl feeding kangaroo, Adelaide Hills, South Australia, Australia

829-859 - An elephant (Loxodonta africana) and a game viewing vehicle in the Addo Elephant Park in South Africa.

829-857 - A buffalo (Syncerus caffer) and a car in the road in Addo Elephant Park in South Africa.