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An adult polar bear (Ursus maritimus) on the edge of a huge iceberg in Arctic Harbour, Isabella Bay, Baffin Island, Nunavut, Canada, North America

Adult polar bears (Ursus maritimus), confrontation on ice floe, Cumberland Peninsula, Baffin Island, Nunavut, Canada, North America

Adult polar bear (Ursus maritimus) on ice floe, Cumberland Peninsula, Baffin Island, Nunavut, Canada, North America

One of a small pod of curious killer whales (Orcinus orca) off the Cumberland Peninsula, Baffin Island, Nunavut, Canada, North America

A small pod of curious killer whales (Orcinus orca) off the Cumberland Peninsula, Baffin Island, Nunavut, Canada, North America

Adult polar bear (Ursus maritimus) cleaning fur on ice floe, Cumberland Peninsula, Baffin Island, Nunavut, Canada, North America

Adult polar bear (Ursus maritimus) leaping from ice floe, Cumberland Peninsula, Baffin Island, Nunavut, Canada, North America

Adult polar bear (Ursus maritimus) on ice floe, Cumberland Peninsula, Baffin Island, Nunavut, Canada, North America

An adult polar bear (Ursus maritimus) on the edge of a huge iceberg in Arctic Harbour, Isabella Bay, Baffin Island, Nunavut, Canada, North America

Adult polar bear (Ursus maritimus) on ice floe, Cumberland Peninsula, Baffin Island, Nunavut, Canada, North America

A mother polar bear (Ursus maritimus) with two cubs on fast ice in Icy Arm, Baffin Island, Nunavut, Canada, North America

Common sandpiper (Actitis hypoleucos) singing while perched on an old tree stump in the Findhorn Valley, Scotland, United Kingdom, Europe

Bowhead whale skull (Balaena mysticetus) at the abandoned Kekerten Island whaling station, Nunavut, Canada, North America

Black-legged Kittiwake (Rissa tridactyla) catching small fish amongst the ice in Lancaster Sound, Nunavut, Canada, North America

Adult bowhead whale (Balaena mysticetus) surfacing in Arctic Harbour, Isabella Bay, Baffin Island, Nunavut, Canada, North America

Black Guillemot (Cepphus grylle) taking flight with small fish, off Cape Mercy, Baffin Island, Nunavut, Canada, North America

Adult bowhead whale (Balaena mysticetus) surfacing in Arctic Harbour, Isabella Bay, Baffin Island, Nunavut, Canada, North America

Fried insects at food stall in the Night Bazaar, Chiang Mai, Northern Thailand, Thailand, Southeast Asia, Asia

River Otter (Lutra canadensis) pup, Yellowstone National Park, Wyoming, United States of America, North America

Young Chacma Baboon (Papio ursinus) riding on its mother's back, Kruger National Park, South Africa, Africa

Spotted Hyena (Spotted Hyaena) (Crocuta crocuta) pup and adult, Kruger National Park, South Africa, Africa

Spotted Hyena (Spotted Hyaena) (Crocuta crocuta) pup playing, Kruger National Park, South Africa, Africa

Uinta Ground Squirrel (Urocitellus armatus) among Mountain Bluebell (Mertensia ciliata), Yellowstone National Park, Wyoming, United States of America, North America

Red Fox (Vulpes vulpes) (Vulpes fulva) vixen and kit, Yellowstone National Park, Wyoming, United States of America, North America

Three Grizzly Bear (Ursus arctos horribilis) cubs of the year, Yellowstone National Park, Wyoming, United States of America, North America

Female Banded-Legged Golden Orb Spider (Nephila senegalensis), Kruger National Park, South Africa, Africa

European Roller (Coracias garrulus) with a Winged Predatory Katydid (Clonia wahlbergi), Kruger National Park, South Africa, Africa

Bald Eagle (Haliaeetus leucocephalus) on approach, Farmington Bay, Utah, United States of America, North America

Black bear (Ursus americanus) cub eating Saskatoon berries, Waterton Lakes National Park, Alberta, Canada, North America

The Philippine tarsier (Tarsius syrichta), known locally as the Maumag, an endangered tarsier species endemic to the Philippines, Southeast Asia, Asia

Burrowing Owl (Athene cunicularia) spreading wings in the rain, United States of America, North America

Baby Swallow-tailed Gull (Larus furcatus) on Genovesa island in Galapagos National Park, Ecuador, South America

Great Blue Herons (Ardea herodias), the largest North American heron, standing in the nest, United States of America, North America

Blue-footed Booby with an egg (Sula nebouxii) on North Seymour Island, Galapagos National Park, Ecuador, South America

Nazca Booby (Sula granti) with open mouth, Genovesa Island, Galapagos National Park, Ecuador, South
america

Kamchatka brown bear (Ursus arctos beringianus) hunting for salmon, Kurile Lake, Kamchatka, Russia, Eurasia

Closeup of suckers and teeth rings on the tentacles of Humboldt (Jumbo) squid (Dosidicus gigas), Gulf of California, Baja California, Mexico, North America

Humboldt (Jumbo) squid (Dosidicus gigas) underwater, Gulf of California, Baja California, Mexico, North America

Buccal cavity (mouth) and tentacles of Humboldt (Jumbo) squid (Dosidicus gigas), Gulf of California, Baja California, Mexico, North America

Humboldt (Jumbo) squid (Dosidicus gigas) swimming at night, Gulf of California, Baja California, Mexico, North America

Manta ray (Manta birostris) feeding on zooplankton by extending its cephalic lobes, Yum Balam Marine Protected Area, Quintana Roo, Mexico, North America

Whale shark (Rhincodon typus) feeding at the surface on zooplankton, mouth open, known as ram feeding, Yum Balam Marine Protected Area, Quintana Roo, Mexico, North America

Male manta ray with almost pure white ventral surface, may be a new species, for now known as Manta alfredi, Yum Balam Marine Protected Area, Quintana Roo, Mexico, North America

Eagle rays (Mobula hypostoma) common in this area and often seen feeding on zooplankton in large groups, Yum Balam Marine Protected Area, Quintana Roo, Mexico, North America

Scientist and whale shark (Rhincodon typus) feeding at the surface on zooplankton, mouth open, known as ram feeding, Yum Balam Marine Protected Area, Quintana Roo, Mexico, North America

Manta ray (Manta birostris) feeding on zooplankton by extending its cephalic lobes, Yum Balam Marine Protected Area, Quintana Roo, Mexico, North America

Biologist taking skin sample from a whale shark to determine what plankton types the animal has been feeding on, Yum Balam Marine Protected Area, Quintana Roo, Mexico, North America

Scientist free diving to make a photo identification of an individual manta ray (Manta birostris), Yum Balam Marine Protected Area, Quintana Roo, Mexico, North America

Water vole (Arvicola terrestris) at burrow entrance, surrounded by a closely cropped lawn, eaten by the herbivorous rodents, United Kingdom, Europe

The marsh frog (Pelophylax ridibundu) an escaped garden alien introduced to Kent in 1935, England, United Kingdom, Europe

Harvest mouse (Micromys minutus) the smallest British rodent by weight, with prehensile tails to help them climb, United Kingdom, Europe

Harvest mouse (Micromys minutus) the smallest British rodent by weight, with prehensile tails to help them climb, United Kingdom, Europe

Water vole (Arvicola terrestris) swimming at the surface of a pond, British Wildlife Centre, Surrey, England, United Kingdom, Europe

Cattle graze on the Mendip Hills, with dramatic views to Glastonbury beyond, Somerset, England, United Kingdom, Europe

Brunnich's Guillemots and Black-legged Kittiwakes on the cliffs of Kolyuchin Island, Chuckchi Sea, Chukotka, Russia, Eurasia

Galapagos blue-footed booby (Sula nebouxii excisa), North Seymour Island, Galapagos, UNESCO World Heritage Site, Ecuador, South America

Red footed booby (Sula sula) in red mangrove, Genovesa Island, Galapagos, UNESCO World Heritage Site, Ecuador, South America

Warbler finch (Certhidea olivacea), Genovesa Island, Galapagos, UNESCO World Heritage Site, Ecuador, South America

Galapagos blue-footed booby (Sula nebouxii excisa), North Seymour Island, Galapagos, UNESCO World Heritage Site, Ecuador, South America

Galapagos brown pelican (Pelecanus occidentalis urinator), Genovesa Island, Galapagos, UNESCO World Heritage Site, Ecuador, South America

Waved albatross (Phoebastria irrorata ), Hispanola Island, Galapagos, UNESCO World Heritage Site, Ecuador, South America

Galapagos Brown Pelican (Pelecanus occidentalis urinator) in flight, Black Turtle Bay, Santa Cruz Island, Galapagos, Ecuador, South America

Nazca booby (Sula granti), Hispanola Island, Galapagos, UNESCO World Heritage Site, Ecuador, South America

Waved albatross (Phoebastria irrorata ) in flight, Hispanola Island, Galapagos, Ecuador, South America

Lava gull (Leucophaeus fuliginosus), Genovesa Island, Galapagos, UNESCO World Heritage Site, Ecuador, South America

Galapagos Lava Lizard (Microlophus albemarlensis), Hispanola Island, Galapagos, UNESCO World Heritage Site, Ecuador, South America

Galapagos sea lion pup (Zalophus californianus wollebaeki), Galapagos, UNESCO World Heritage Site, Ecuador, South America

Nazca booby (Sula granti), Hispanola Island, Galapagos, UNESCO World Heritage Site, Ecuador, South America

Walrus (Odobenus rosmarinus) close-up of face, tusks and vibrissae (whiskers), hauled out on pack ice to rest and sunbathe, Nunavut, Canada, North America

Walrus (Odobenus rosmarus) hauled out on pack ice to rest and sunbathe, Foxe Basin, Nunavut, Canada, North America