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Galapagos marine iguana (Amblyrhynchus cristatus), Fernandina Island, Galapagos Islands, UNESCO World Heritage Site, Ecuador, South America

Galapagos marine iguanas (Amblyrhynchus cristatus), Fernandina Island, Galapagos Islands, UNESCO World Heritage Site, Ecuador, South America

Brown pelican (Pelecanus occidentalis urinator), San Cristobal Island, Galapagos Islands, UNESCO World Heritage Site, Ecuador, South America

Male mountain bluebird (Sialia currucoides), Yellowstone National Park, UNESCO World Heritage Site, Wyoming, United States of America, North America

Wild Galapagos tortoise (Geochelone elephantopus), Urbina Bay, Isabela Island, Galapagos Islands, UNESCO World Heritage Site, Ecuador, South America

Blue-footed booby (Sula nebouxii) pair, North Seymour Island, Galapagos Islands, UNESCO World Heritage Site, Ecuador, South America

Adult warbler finch (Certhidea olivacea), Santiago Island, Galapagos Islands, UNESCO World Heritge Site, Ecuador, South America

Galapagos land iguana (Conolophus subcristatus), North Seymour Island, Galapagos Islands, UNESCO World Heritge Site, Ecuador, South America

Red-footed booby chick (Sula sula), Genovesa Island, Galapagos Islands, UNESCO World Heritage Site, Ecuador, South America

Great blue heron (Ardea herodias), Cerro Dragon, Santa Cruz Island, Galapagos Islands, UNESCO World Heritge Site, Ecuador, South America

Adult cactus finch (Geospiza scandens), Santa Cruz Island, Galapagos Islands, UNESCO World Heritage Site, Ecuador, South America

Elk, Cervus canadensis, wapiti, South Rim, Grand Canyon National Park, UNESCO World Heritage Site, Arizona, United States of America, North America

Three black bear (Ursus americanus) cubs of the year or spring cubs, Yellowstone National Park, UNESCO World Heritage Site, Wyoming, United States of America, North America

Line of Bison (Bison bison) crossing the Lamar River, Yellowstone National Park, UNESCO World Heritage Site, Wyoming, United States of America, North America

Marine Iguana (Amblyrhynchus cristatus), Turtle Bay, Isla Santa Cruz, Galapagos Islands, UNESCO World Heritage Site, Ecuador, South America

Marine Iguanas (Amblyrhynchus cristatus), Isla Santa Cruz, Galapagos Islands, UNESCO World Heritage Site, Ecuador, South America

Adult black-browed albatross (Thalassarche melanophrys) pair, nesting site on New Island, Falklands, South Atlantic Ocean, South America

Young African elephant (Loxodonta africana) playing in the water, Serengeti National Park, UNESCO World Heritage Site, Tanzania, East Africa, Africa

Two young African elephant (Loxodonta africana) playing in the water, Serengeti National Park, UNESCO World Heritage Site, Tanzania, East Africa, Africa

African elephant (Loxodonta africana) with large tusks, Ngorongoro Crater, UNESCO World Heritage Site,Tanzania, East Africa, Africa

Giant tortoise (Geochelone nigra) at the Galapaguera de Cerro Colorado, tortoise breeding center, Isla San Cristobal (San Cristobal Island), Galapagos Islands, UNESCO World Heritage Site, Ecuador, South America

Sally lightfoot crab (Grapsus grapsus) and marine iguana, Espinosa Point, Isla Fernandina (Fernandina Island), Galapagos Islands, UNESCO World Heritage Site, Ecuador, South America

African elephant (Loxodonta africana) with large tusks, Ngorongoro Crater, UNESCO World Heritage Site, Tanzania, East Africa, Africa

Two bull elk (Cervus canadensis) sparring during the rut, Jasper National Park, UNESCO World Heritage Site, Alberta, Canada, North America

Bison (Bison bison) reflected in a pond, Yellowstone National Park, UNESCO World Heritage Site, Wyoming, United States of America, North America

Lava gulls (leucophaeus fuliginosus), Cerro Brujo, San Cristobal Island, Galapagos Islands, UNESCO World Heritage Site, Ecuador, South America

Adult yellow warbler (Dendroica petechia aureola), Santiago Island, Galapagos Islands, UNESCO World Heritge Site, Ecuador, South America

Galapagos marine iguana (Amblyrhynchus cristatus), Fernandina Island, Galapagos Islands, UNESCO World Heritage Site, Ecuador, South America

Adult male great frigatebird (Fregata minor), Genovesa Island, Galapagos Islands, UNESCO World Heritge Site, Ecuador, South America

Lava lizard (Microlophus spp), Santa Cruz Island, Galapagos Islands, UNESCO World Heritage Site, Ecuador, South America

Galapagos land iguana (Conolophus subcristatus), Islas Plaza (lPlaza island), Galapagos Islands, UNESCO World Heritage Site, Ecuador, South America

Little Gecko behind a illuminated palm leaf, Vallee de Mai, UNESCO World Heritage Site, Praslin, Seychelles, Africa

Pronghorn buck (Antilocapra americana), Lamar Valley, Yellowstone National Park, UNESCO World Heritage Site, Wyoming, United States of America, North America

Elk (Cervus canadensis) (wapiti), South Rim, Grand Canyon National Park, UNESCO World Heritage Site, Arizona, United States of America, North America

Bull Elk with velvet covered antlers in Jasper National Park, UNESCO World Heritage Site, Alberta, Canada, North America

Elk with Rocky Mountains in the background, Jasper National Park, UNESCO World Heritage Site, Alberta, Canada, North America

Adult and young Coke's hartebeest (Alcelaphus buselaphus cokii) drinking, Serengeti National Park, UNESCO World Heritage Site, Tanzania, East Africa, Africa

Grizzly bear (Ursus arctos horribilis), Yellowstone National Park, UNESCO World Heritage Site, Wyoming, United States of America, North America

Wild Galapagos tortoise (Geochelone elephantopus), Santa Cruz Island, Galapagos Islands, UNESCO World Heritage Site, Ecuador, South America

Red-footed booby (Sula sula), Genovesa Island, Galapagos Islands, UNESCO World Heritage Site, Ecuador, South America

Bison in the Lamar Valley, Yellowstone National Park, UNESCO World Heritage Site, Wyoming, United States of America, North America

Bison (Bison bison) reflected in a pond, Yellowstone National Park, UNESCO World Heritage Site, Wyoming, United States of America, North America

Bison (Bison bison) reflected in a pond, Yellowstone National Park, UNESCO World Heritage Site, Wyoming, United States of America, North America

Galapagos marine iguana (Amblyrhynchus cristatus), Fernandina Island, Galapagos Islands, UNESCO World Heritge Site, Ecuador, South America

American alligator (Alligator mississippiensis), Everglades, UNESCO World Heritage Site, Florida, United States of America, North America

Bison in the Lamar Valley, Yellowstone National Park, UNESCO World Heritage Site, Wyoming, United States of America, North America

Male Williamson's sapsucker (Sphyrapicus thyroideus), Yellowstone National Park, UNESCO World Heritage Site, Wyoming, United States of America, North America

Lava gull (leucophaeus fuliginosus), Cerro Brujo, San Cristobal Island, Galapagos Islands, UNESCO World Heritage Site, Ecuador, South America

Lava lizard (Microlophus albemarlensis), Port Egas (James Bay), Isla Santiago (Santiago Island), Galapagos Islands, UNESCO World Heritage Site, Ecuador, South America

Galapagos mockingbird (Mimus parvulus), Genovesa Island, Galapagos Islands, UNESCO World Heritage Site, Ecuador, South America

Lava lizard (Microlophus spp), Santa Cruz Island, Galapagos Islands, UNESCO World Heritage Site, Ecuador, South America

Elk (Cervus canadensis) (wapiti), South Rim, Grand Canyon National Park, UNESCO World Heritage Site, Arizona, United States of America, North America

American alligator (Alligator mississippiensis), Everglades, UNESCO World Heritage Site, Florida, United States of America, North America

African elephant (Loxodonta africana), Ngorongoro Crater, UNESCO World Heritage Site, Tanzania, East Africa, Africa

Bison herd in early morning sun, Lamar Valley, Yellowstone National Park, UNESCO World Heritage Site, Wyoming, United States of America, North America

Bison and Mount Washburn in early morning light, Yellowstone National Park, UNESCO World Heritage Site, Wyoming, United States of America, North America

Lone American bison with steaming thermal features in the snow, Yellowstone National Park, UNESCO World Heritage Site, Wyoming, United States of America, North America

Masai giraffe (Giraffa camelopardalis tippelskirchi), Ndutu, Ngorongoro Conservation Area, UNESCO World Heritage Site, Serengeti, Tanzania, East Africa, Africa

An adult anhinga (Anhinga anhinga), taking flight on New River near the Mesoamerican archaeological site of Lamanai, Belize

Giant Prickly Pear Cactus (Opuntia cacti) on South Plaza, Galapagos Islands, UNESCO World Heritage Site, Ecuador, South America

Great Frigatebird male (Fregata minori), Genovesa Island, Galapagos, UNESCO World Heritage Site, Ecuador, South America

Adult black-browed albatross (Thalassarche melanophrys), close up at nesting site on West Point Island, Falklands, South America

Adult black-browed albatross (Thalassarche melanophrys), in flight returning to nesting site on West Point Island, Falklands, South America

Adult black-browed albatross (Thalassarche melanophrys), in flight returning to nesting site on West Point Island, Falklands, South America

African forest elephant (Loxodonta cyclotis) with baby , Dzanga Bai, UNESCO World Heritage Site, Dzanga-Sangha Special Reserve, Central African Republic, Africa

Galapagos Giant Tortoise (Chelonoidis chathamensis), can live for over 100 years, San Cristobal island, Galapagos, UNESCO World Heritage Site, Ecuador, South America

The welcome sign for Desert View Point on the east side of Grand Canyon South Rim, UNESCO World Heritage Site, Arizona, United States of America, North America

The upper half of the Desert View Watchtower viewed from the observation deck at Grand Canyon South Rim, UNESCO World Heritage Site, Arizona, United States of America, North America

The top floor of the historic Watchtower at Grand Canyon South Rim, UNESCO World Heritage Site, Arizona, United States of America, North America

The main house of the ancient Tusayan Ruins at Grand Canyon South Rim, UNESCO World Heritage Site, Arizona, United States of America, North America

Adult dovekies (Little Auk) (Alle alle) at their breeding site amongst scree slopes at Rubini Rock, Tikhaya Bay, Hooker Island, Franz Josef Land, Russia, Arctic Ocean, Eurasia

Brunnich's guillemot (Uria lomvia) breeding and nesting site at Cape Fanshawe in the Svalbard Archipelago, Norway, Arctic, Europe

Brunnich's guillemot (Uria lomvia) breeding and nesting site at Cape Fanshawe in the Svalbard Archipelago, Norway, Arctic, Europe

Great frigatebird (Fregata minor) feeding on erupting green sea turtle (Chelonia mydas) hatchlings in the Galapagos, UNESCO World Heritage Site, Ecuador, South America

Great frigatebird chick (Fregata minor) on the nest on North Seymour Island in the Galapagos Island Archipelago, UNESCO World Heritage Site, Ecuador, South America

Male Great frigatebird (Fregata minor) in breeding plumage with red gular pouch, on Genovesa (Tower) Island, Galapagos, UNESCO World Heritage Site, Ecuador, South America

Wild Galapagos giant tortoise (Geochelone elephantopus) at Urbina Bay, Isabela Island, Galapagos Islands, UNESCO World Heritage Site, Ecuador, South America

Lava and ash floes in the Galapagos Islands Archipelago, UNESCO World Heritage Site, Ecuador, South America

Lava and ash floes in the Galapagos Island Archipelago, UNESCO World Heritage Site, Ecuador, South America

Lava lizard (Microlophus spp) in the Galapagos Islands Archipelago, UNESCO World Heritage Site, Ecuador, South America

Lava lizard (Microlophus spp) in the Galapagos Islands Archipelago, UNESCO World Heritage Site, Ecuador, South America

Lava lizard (Microlophus spp) courtship behavior in the Galapagos Islands Archipelago, UNESCO World Heritage Site, Ecuador, South America

The endemic Galapagos marine iguana (Amblyrhynchus cristatus) feeding on algae at low tide in the Galapagos, UNESCO World Heritage Site, Ecuador, South America

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

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

Galapagos fur seal (Arctocephalus galapagoensis) hauled out on lava flow in the Galapagos Islands, UNESCO World Heritage Site, Ecuador, South America

Adult great blue heron (Ardea herodias cognata) hunting for green sea turtle hatchlings in the Galapagos Islands, UNESCO World Heritage Site, Ecuador, South America

Spotted eagle rays (Aetobatus narinari) underwater at Leon Dormido Island off San Cristobal Island, Galapagos, UNESCO World Heritage Site, Ecuador, South America

Spotted eagle ray (Aetobatus narinari) underwater at Leon Dormido Island off San Cristobal Island, Galapagos, UNESCO World Heritage Site, Ecuador, South America

The endemic lava cactus (Brachycereus spp) growing in the Galapagos Island Archipelago, UNESCO World Heritage Site, Ecuador, South America

Great frigatebirds (Fregata minor) in flight on Genovesa (Tower) Island, in the Galapagos Island Archipelago, UNESCO World Heritage Site, Ecuador, South America

Male Great frigatebird (Fregata minor) in flight against the nearly full moon on Genovesa (Tower) Island, Galapagos Islands, UNESCO World Heritage Site, Ecuador, South America

Greater flamingos (Phoenicopterus ruber) foraging for small pink shrimp in saltwater lagoon in the Galapagos Islands, UNESCO World Heritage Site, Ecuador, South America

Greater flamingo (Phoenicopterus ruber) foraging for small pink shrimp in saltwater lagoon in the Galapagos Islands, UNESCO World Heritage Site, Ecuador, South America

Unusual dinghy driving in the Galapagos Island Archipelago, UNESCO World Heritage Site, Ecuador, South America

Galapagos penguin (Spheniscus mendiculus) feeding underwater on small baitfish in the Galapagos Islands, UNESCO World Heritage Site, Ecuador, South America