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CU, TU, Chimpanzee (Pan troglodytes) vocalizing in forest, Gombe Stream National Park, Tanzania
CU, TU, Chimpanzee (Pan troglodytes) vocalizing in forest, Gombe Stream National Park, Tanzania
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CU, MS, Chimpanzee (Pan troglodytes) running in forest, Gombe Stream National Park, Tanzania
CU, MS, Chimpanzee (Pan troglodytes) running in forest, Gombe Stream National Park, Tanzania
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CU, WS, LA, Chimpanzee (Pan troglodytes) climbing up tree in forest, Gombe Stream National Park, Tanzania
CU, WS, LA, Chimpanzee (Pan troglodytes) climbing up tree in forest, Gombe Stream National Park, Tanzania
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CU, TD, ZO, MS, Chimpanzee (Pan troglodytes) using leaf to drink from stream, Gombe Stream National Park, Tanzania
CU, TD, ZO, MS, Chimpanzee (Pan troglodytes) using leaf to drink from stream, Gombe Stream National Park, Tanzania
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MS, Chimpanzee (Pan troglodytes) family sitting on ground in forest, Gombe Stream National Park, Tanzania
MS, Chimpanzee (Pan troglodytes) family sitting on ground in forest, Gombe Stream National Park, Tanzania
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CU, MS, Chimpanzee (Pan troglodytes) vocalizing and running in forest, (drum display), Gombe Stream National Park, Tanzania
CU, MS, Chimpanzee (Pan troglodytes) vocalizing and running in forest, (drum display), Gombe Stream National Park, Tanzania
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MS, Young chimpanzee (Pan troglodytes) playing with rock in forest, Gombe Stream National Park, Tanzania
MS, Young chimpanzee (Pan troglodytes) playing with rock in forest, Gombe Stream National Park, Tanzania
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CU, King penguin (Aptenodytes patagonicus), headshot, South Georgia Island, Falkland Islands, British overseas territory
CU, King penguin (Aptenodytes patagonicus), headshot, South Georgia Island, Falkland Islands, British overseas territory
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WS, PAN, King penguin (Aptenodytes patagonicus) rookery on hillside, South Georgia Island, Falkland Islands, British overseas territory
WS, PAN, King penguin (Aptenodytes patagonicus) rookery on hillside, South Georgia Island, Falkland Islands, British overseas territory
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WS, Southern fur seal (Arctocephalus gazella) colony on beach, mist over mountains in background, South Georgia Island, Falkland Islands, British overseas territory
WS, Southern fur seal (Arctocephalus gazella) colony on beach, mist over mountains in background, South Georgia Island, Falkland Islands, British overseas territory
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Polar bears (Ursus maritimus) flirting, near Churchill, Manitoba, Canada
Polar bears (Ursus maritimus) flirting, near Churchill, Manitoba, Canada
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Polar bear (Ursus maritimus) and husky dogs (Canis lupus familiaris), wide
Polar bear (Ursus maritimus) and husky dogs (Canis lupus familiaris), wide
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Time-lapse of Leaf Cutter Ants (Atta sp.) carrying pieces of leaves to their nest at night in the rainforest, Ecuador
Time-lapse of Leaf Cutter Ants (Atta sp.) carrying pieces of leaves to their nest at night in the rainforest, Ecuador
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Time-lapse of leaf cutter ants (Atta sp.) walking along a branch above a rainforest stream in the Ecuadorian Amazon.
Time-lapse of leaf cutter ants (Atta sp.) walking along a branch above a rainforest stream in the Ecuadorian Amazon.
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Time-lapse of leaf cutter ants (Atta sp.) walking along a branch above a rainforest stream in the Ecuadorian Amazon.
Time-lapse of leaf cutter ants (Atta sp.) walking along a branch above a rainforest stream in the Ecuadorian Amazon.
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MS, Three King penguins (Aptenodytes patagonicus) standing on rocks by stream, South Georgia Island, Falkland Islands, British overseas territory
MS, Three King penguins (Aptenodytes patagonicus) standing on rocks by stream, South Georgia Island, Falkland Islands, British overseas territory
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CU, King penguin (Aptenodytes patagonicus) with two chicks, South Georgia Island, Falkland Islands, British overseas territory
CU, King penguin (Aptenodytes patagonicus) with two chicks, South Georgia Island, Falkland Islands, British overseas territory
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MS, LA, King penguins (Aptenodytes patagonicus) walking on pebbles, South Georgia Island, Falkland Islands, British overseas territory
MS, LA, King penguins (Aptenodytes patagonicus) walking on pebbles, South Georgia Island, Falkland Islands, British overseas territory
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CU, SELECTIVE FOCUS, Two King penguins (Aptenodytes patagonicus), headshot, South Georgia Island, Falkland Islands, British overseas territory
CU, SELECTIVE FOCUS, Two King penguins (Aptenodytes patagonicus), headshot, South Georgia Island, Falkland Islands, British overseas territory
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MS King Penguins, Aptenodytes patagonicus, displaying courting behaviour, Antarctica
MS King Penguins, Aptenodytes patagonicus, displaying courting behaviour, Antarctica
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WS, King penguins (Aptenodytes patagonicus) and southern fur seals (Arctocephalus gazella) at shoreline, zodiac boat crossing bay, mountains in background, South Georgia Island, Falkland Islands, British overseas territory
WS, King penguins (Aptenodytes patagonicus) and southern fur seals (Arctocephalus gazella) at shoreline, zodiac boat crossing bay, mountains in background, South Georgia Island, Falkland Islands, British overseas territory
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Human sperm, single sperm swimming strongly
Human sperm, single sperm swimming strongly
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Two alligators with one on grassy bank and other in water expanding body and vibrating water, Brazos Bend State Park, Texas, USA
Two alligators with one on grassy bank and other in water expanding body and vibrating water, Brazos Bend State Park, Texas, USA