Michael Nolan
A captive pet brown-throated sloth (Bradypus variegatus), San Francisco Village, Loreto, Peru, South America
Adult bottlenose dolphin (Tursiops truncatus), motion blur image off Isla San Pedro Martir, Baja California Norte, Mexico, North America
Lava lizard (Microlophus spp,) on top of marine iguana (Amblyrhynchus cristatus), Las Bachas, Santa Cruz Island, Galapagos Islands, Ecuador, South America
Long-beaked common dolphin (Delphinus capensis), Isla San Esteban, Gulf of California (Sea of Cortez), Baja California, Mexico, North America
A curious young Antarctic fur seal (Arctocephalus gazella), Gold Harbour, South Georgia, Polar Regions
Hawaiian spinner dolphins (Stenella longirostris), AuAu Channel, Maui, Hawaii, United States of America, Pacific
Green sea turtle (Chelonia mydas) underwater with snorkeler, Maui, Hawaii, United States of America, Pacific
Antarctic fur seal (Arctocephalus gazella) pup with king penguins, Gold Harbour, South Georgia, South Atlantic Ocean, Polar Regions
Sunset over ice floes and icebergs, near Pleneau Island, Antarctica, Southern Ocean, Polar Regions
Gale force westerly winds build large waves in the Drake Passage, Antarctica, Polar Regions
Above and below view of glacial ice near Port Lockroy, Antarctica, Polar Regions
Huge mushroom shaped iceberg in Dorian Bay, western side of the Antarctic Peninsula, Southern Ocean, Polar Regions
Adult Hector's dolphins (Cephalorhynchus hectori) underwater near Akaroa, South Island, New Zealand, Pacific
Fog lifting on the steep cliffs of Icy Arm, Baffin Island, Nunavut, Canada, North America
California gray whale (Eschrichtius robustus) mother and calf underwater in San Ignacio Lagoon, Baja California Sur, Mexico, North America
Southern elephant seal (Mirounga leonina) bull, Peggotty Bluff, South Georgia, South Atlantic Ocean, Polar Regions
A large school of bigeye trevally (Caranx sexfasciatus) in deep water near Cabo Pulmo, Baja California Sur, Mexico, North America
Seven Moai at Ahu Akivi, the first restored altar on Easter Island (Isla de Pascua) (Rapa Nui), UNESCO World Heritage Site, Chile, South America
California sea lion bulls (Zalophus californianus) underwater, Los Islotes, Baja California Sur, Mexico, North America
King penguin (Aptenodytes patagonicus) chicks, Gold Harbour, South Georgia Island, South Atlantic Ocean, Polar Regions
Ice choked waters surrounded by ice-capped mountains and glaciers in Neko Harbor, Antarctica, Polar Regions
Icicles hang from a glacial iceberg at Cierva Cove, Antarctica, Polar Regions
Negribreen (Negri Glacier), Olav V Land, Spitsbergen, Svalbard Archipelago, Norway, Scandinavia, Europe
Lotus flower (Nelumbo nucifera) along the Tonle Sap River, Cambodia, Indochina, Southeast Asia, Asia
Unidentified large jellyfish in brash ice, Cierva Cove, Antarctica, Southern Ocean, Polar Regions
A curious young polar bear (Ursus maritimus) on the ice in Bear Sound, Spitsbergen Island, Svalbard, Norway, Scandinavia, Europe
Sunrise over Angkor Wat, Angkor, UNESCO World Heritage Site, Siem Reap Province, Cambodia, Indochina, Southeast Asia, Asia
Sunset along the shoreline at Himalaya Beach, Sonora, Mexico, North America
Hawaiian spinner dolphins (Stenella longirostris), AuAu Channel, Maui, Hawaii, United States of America, Pacific
Endemic giant barrel cactus (Ferocactus diguetii), Isla Santa Catalina, Gulf of California (Sea of Cortez), Baja California Sur, Mexico, North America
Sally lightfoot crab (Grapsus grapsus) in the intertidal zone, Urbina Bay, Isabela Island, Galapagos Islands, Ecuador, South America
Southern elephant seal (Mirounga leonina) bull, Gold Harbour, South Georgia, South Atlantic Ocean, Polar Regions
Arctic cotton grass (Eriophorum scheuchzeri) flowering in Sisimiut, Greenland, Polar Regions
Southern elephant seal bull (Mirounga leonina) molting in Gold Harbor, South Georgia, UK Overseas Protectorate, Polar Regions
Southern elephant seals (Mirounga leonina), Peggotty Bluff, South Georgia, South Atlantic Ocean, Polar Regions
Sea ice mixed with brash ice near Pleneau Island, western side of the Antarctic Peninsula, Southern Ocean, Polar Regions
Galapagos sea lions (Zalophus wollebaeki), Gardner beach, Santiago Island, Galapagos Islands, UNESCO World Heritage Site, Ecuador, South America
Wild saltwater crocodile (Crocodylus porosus) head detail in porous creek on the Hunter River, Mitchell River National Park, Kimberley, Western Australia, Australia, Pacific
Green sea turtle (Chelonia mydas) underwater, Maui, Hawaii, United States of America, Pacific
A Mexican giant cardon cactus (Pachycereus pringlei) at sunset on Isla Santa Catalina, Baja California Sur, Mexico, North America
Sea ice mixed with brash ice near Pleneau Island, western side of the Antarctic Peninsula, Southern Ocean, Polar Regions
Green sea turtle (Chelonia mydas) underwater, Maui, Hawaii, United States of America, Pacific
Southern elephant seal (Mirounga leonina) weaner pup, Snow Island, Antarctica, Polar Regions
Arctic cottongrass (Eriophorum callitrix), Heckla Haven, Northeast Greenland, Polar Regions
Young adult polar bear (Ursus maritimus) on ice in Hinlopen Strait, Svalbard, Norway, Scandinaiva, Europe
Hard and soft corals and sea star underwater on Sebayur Island, Komodo Island National Park, Indonesia, Southeast Asia, Asia
Sally lightfoot crab (Grapsus grapsus), Cerro Dragon, Santa Cruz Island, Galapagos Islands, Ecuador, South America
Young brown bear (Ursus arctos) fishing for pink salmon at low tide in Pavlof Harbour, Chichagof Island, Southeast Alaska, United States of America, North America
The Houses of Parliament and Big Ben from the Westminster Bridge at night, London, England, United Kingdom, Europe
Unidentified large jellyfish in brash ice, Cierva Cove, Antarctica, Southern Ocean, Polar Regions
Muskox (Ovibos moschatus) skull, Halvo, Northeast Greenland, Polar Regions
Above and below water view of Danco Island, Errera Channel, Antarctica, Polar Regions
Sea ice mixed with brash ice near Pleneau Island, western side of the Antarctic Peninsula, Southern Ocean, Polar Regions
Sunset over ice floes and icebergs, near Pleneau Island, Antarctica, Southern Ocean, Polar Regions
Sally lightfoot crab (Grapsus grapsus), Cerro Dragon, Santa Cruz Island, Galapagos Islands, Ecuador, South America
Aurora borealis (Northern Lights) dance above the Lindblad Expeditions ship National Geographic Explorer in Hudson Strait, Nunavut, Canada, North America
Arctic cottongrass (Eriophorum callitrix), Heckla Haven, Northeast Greenland, Polar Regions
Sunset over ice floes and icebergs, near Pleneau Island, Antarctica, Southern Ocean, Polar Regions
Galapagos sea lions (Zalophus wollebaeki) underwater, Champion Island, Galapagos Islands, Ecuador, South America
The aurora borealis in Kangerlussuaq Fjord, Greenland, Polar Regions
Night view of the Milky Way with lit up tent in foreground, Himalaya Beach, Sonora, Mexico, North America
King penguins (Aptenodytes patagonicus), Gold Harbour, South Georgia Island, South Atlantic Ocean, Polar Regions
Northern fulmar (Fulmarus glacialis), Svalbard Archipelago, Norway, Scandinavia, Europe
Half above and half below view of the Komodo Diving Resort at sunset, Sebayur Island, Flores Sea, Indonesia, Southeast Asia, Asia
Adult leopard seal (Hydrurga leptonyx) on ice in Cierva Cove, Antarctic Peninsula, Antarctica, Southern Ocean, Polar Regions
Blue-footed booby (Sula nebouxii), North Seymour Island, Galapagos Islands, Ecuador, South America
A curious young polar bear (Ursus maritimus) on the ice in Bear Sound, Spitsbergen Island, Svalbard, Norway, Scandinavia, Europe
Snorkeler in underwater profusion of hard plate corals at Pulau Setaih Island, Natuna Archipelago, Indonesia, Southeast Asia, Asia
A wild brown-throated sloth (Bradypus variegatus), Landing Casual, Upper Amazon River Basin, Loreto, Peru, South America
The Devil's Throat (Garganta del Diablo), Iguazu Falls National Park, UNESCO World Heritage Site, Misiones, Argentina, South America
Expeditions ship amongst huge icebergs, Ilulissat, Greenland, Polar Regions
Galapagos sea lions (Zalophus wollebaeki) underwater, Champion Island, Galapagos Islands, Ecuador, South America
California sea lion bull (Zalophus californianus) half above and half below with snorkeler at Los Islotes, Baja California Sur, Mexico, North America
Per Johnson's replica of traditional Viking boat on Hitra Island, Norway, Scandinavia, Europe
Adult gentoo penguins (Pygoscelis papua) leaping into the sea in Mickelson Harbor, Antarctica, Southern Ocean, Polar Regions
South Sawyer Glacier calving, Tracy Arm-Ford's Terror Wilderness area, Southeast Alaska, United States of America, North America
Imperial shag (Phalacrocorax atriceps albiventer) in flight, New Island, Falkland Islands, South Atlantic Ocean, South America
Sun shining through Devil's Club on Chichagof Island, Southeast Alaska, United States of America, North America
Painted ghost crab (Ocypode gaudichaudii), Cerro Bruja, San Cristobal Island, Galapagos Islands, Ecuador, South America
Sunrise on saguaro cactus in bloom (Carnegiea gigantea), Sweetwater Preserve, Tucson, Arizona, United States of America, North America
Adult dark morph red-footed booby (Sula sula), Genovesa Island, Galapagos Islands, Ecuador, South America
Sun shining through Devil's Club on Chichagof Island, Southeast Alaska, United States of America, North America
Southern elephant seal (Mirounga leonina) weaner pups, Snow Island, Antarctica, Polar Regions
Iceberg, Vikingbukta (Viking Bay), Scoresbysund, Northeast Greenland, Polar Regions
Adult arctic terns (Sterna paradisaea) in dispute on Flatey Island, Iceland, Polar Regions
Sunburst in blue sky near the Cumberland Peninsula, Baffin Island, Nunavut, Canada, North America
Lotus flower (Nelumbo nucifera), near the village of Kampong Tralach, Cambodia, Indochina, Southeast Asia, Asia
Green sea turtle (Chelonia mydas) underwater, Maui, Hawaii, United States of America, Pacific
Hawaiian spinner dolphins (Stenella longirostris), AuAu Channel, Maui, Hawaii, United States of America, Pacific
Sunrise on saguaro cactus in bloom (Carnegiea gigantea), Sweetwater Preserve, Tucson, Arizona, United States of America, North America