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Littered beluga bones left by whalers, Delphinapterus leucas, at Ahlstrandhalvoya, Bellsund, Svalbard, Norway, Scandinavia, Europe
Snorkeler taking photo of urchin underwater off Maui, Hawaii, United States of America, Pacific
Green sea turtle (Chelonia mydas) underwater with snorkeler, Maui, Hawaii, United States of America, Pacific
Green sea turtle (Chelonia mydas) underwater with snorkeler, Maui, Hawaii, United States of America, Pacific
Green sea turtle (Chelonia mydas) underwater with snorkeler, Maui, Hawaii, United States of America, Pacific
A Humpback Whales family surfacing, Hervey Bay, Queensland, Australia
California gray whale (Eschrichtius robustus) touched by excited whale watcher, San Ignacio Lagoon, Baja California Sur, Mexico, North America
California gray whale (Eschrichtius robustus) and excited whale watchers, San Ignacio Lagoon, Baja California Sur, Mexico, North America
Leatherback turtle (Dermochelys coriacea) eggs being collected for transfer to a safer hatchery location, Shell Beach, Guyana, South America
Researchers measuring a female Leatherback turtle (Dermochelys coriacea) at its nest site, Shell Beach, Guyana, South America
Leatherback turtle (Dermochelys coriacea) eggs being collected for transfer to a safer hatchery location, Shell Beach, Guyana, South America
Hawksbill turtle (Eretmochelys imbricata) and diver, Sulawesi, Indonesia, Southeast Asia, Asia
Whale shark (Rhincodon typus) with rainbow runner observed by a tourist and guide in Honda Bay, Palawan, The Philippines, Southeast Asia, Asia
Tourists snorkelling with a whale shark (Rhincodon typus) in Honda Bay, Palawan, The Philippines, Southeast Asia, Asia
Tourists snorkelling with a whale shark (Rhincodon typu ) in Honda Bay, Puerto Princesa, Palawan, The Philippines, Southeast Asia, Asia
Tourist snorkelling with a whale shark (Rhincodon typus) in Honda Bay, Palawan, The Philippines, Southeast Asia, Asia
Tourist and tour guide swimming with a whale shark (Rhincodon typus) in Honda Bay, Palawan, The Philippines, Southeast Asia, Asia
Tourist snorkelling with a whale shark (Rhincodon typus) in Honda Bay, Palawan, The Philippines, Southeast Asia, Asia
Snorkeller swimming with a juvenile whale shark (Rhincodon typus) in Honda Bay, Palawan, The Philippines, Southeast Asia, Asia
Tourists snorkelling with a whale shark (Rhincodon typus) in Honda Bay, Palawan, The Philippines, Southeast Asia, Asia
Snorkeller with oceanic manta ray (Manta birostris) feeding near the surface, Honda Bay, Palawan, The Philippines, Southeast Asia, Asia
A group of snorkellers observing spinetail devil rays (Mobula mobular) engaged in sexual courtship in Honda Bay, Palawan, The Philippines, Southeast Asia, Asia
Snorkellers with an oceanic manta ray (Manta birostris) feeding near the surface, Honda Bay, Palawan, The Philippines, Southeast Asia, Asia
Oceanic manta ray (Manta birostris) feeding near the surface, Honda Bay, Palawan, The Philippines, Southeast Asia, Asia
Littered beluga bones left by whalers, Delphinapterus leucas, at Ahlstrandhalvoya, Bellsund, Svalbard, Norway, Scandinavia, Europe
Alcantara gorge, Castiglione di Sicilia, Sicily, Italy, Mediterranean, Europe
Spotted eagle ray (Aetobatus narinari) underwater, Leon Dormido Island, San Cristobal Island, Galapagos Islands, Ecuador, South America
Snorkellers observing spinetail devil rays (Mobula mobular) engaged in sexual courtship in Honda Bay, Palawan, The Philippines, Southeast Asia, Asia
Leatherback turtle (Dermochelys coriacea) laying eggs under the watchful eyes of a conservation worker, Shell Beach, Guyana, South America
Snorkeller with a juvenile whale shark (Rhincodon typus) feeding on the suface in Honda Bay, Palawan, The Philippines, Southeast Asia, Asia
Spotted eagle ray (Aetobatus narinari) underwater, Leon Dormido Island, San Cristobal Island, Galapagos Islands, Ecuador, South America
Nisyros volcano view, Nisyros Island, Dodecanese Islands, Greek Islands, Greece, Europe
Tourist swimming with a whale shark (Rhincodon typus) in Honda Bay, Palawan, The Philippines, Southeast Asia, Asia
Elephant safari in Hurulu Eco Park biosphere reserve, Habarana, Anuradhapura District, Sri Lanka, Asia
California gray whale (Eschrichtius robustus) and excited whale watchers, San Ignacio Lagoon, Baja California Sur, Mexico, North America
Applying a tag to a Leatherback turtle (Dermochelys coriacea) at its nesting site, Shell Beach, Guyana, South America
Turtle warden with nesting Leatherback turtle (Dermochelys coriacea), Shell Beach, Guyana, South America
Tourist swimming with a whale shark (Rhincodon typus) in Honda Bay, Palawan, The Philippines, Southeast Asia, Asia
California gray whale (Eschrichtius robustus) and excited whale watchers, San Ignacio Lagoon, Baja California Sur, Mexico, North America
Bull elk, Cervus canadensis, with curious photographers, Yellowstone National Park, Wyoming, USA
Cavers shining lamps on bats in Pokhara Bat Caves, Pokhara, Nepal, Asia
Tourists snorkelling with a whale shark (Rhincodon typus) in Honda Bay, Palawan, The Philippines, Southeast Asia, Asia
Two tourists snorkelling with a whale shark (Rhincodon typus), in Honda Bay, Palawan, The Philippines, Southeast Asia, Asia
California gray whale (Eschrichtius robustus) and excited whale watchers, San Ignacio Lagoon, Baja California Sur, Mexico, North America
Snorkellers with a juvenile whale shark (Rhincodon typus) feeding at the suface in Honda Bay, Palawan, The Philippines, Southeast Asia, Asia
Green sea turtle (Chelonia mydas) underwater with snorkeler, Maui, Hawaii, United States of America, Pacific
California gray whale (Eschrichtius robustus) and excited whale watchers, San Ignacio Lagoon, Baja California Sur, Mexico, North America
British Base and Post Office, Port Lockroy, Antarctic Peninsula, Antarctica, Polar Regions
Gentoo penguins, Port Lockroy, Antarctic Peninsula, Antarctica, Polar Regions
Hawksbill turtle (Eretmochelys imbricata) and diver, Sulawesi, Indonesia, Southeast Asia, Asia
Diver and green turtle (Chelonia mydas), Sulawesi, Indonesia, Southeast Asia, Asia
Humpback whale (Megaptera novaeangliae) watching in Harvey Bay, Queensland, Australia, Pacific
Humpback whale (Megaptera novaeangliae) watching in Harvey Bay, Queensland, Australia, Pacific
Curious young California sea lion (Zalophus californianus) with snorkeler underwater at Los Islotes, Baja California Sur, Mexico, North America
Aerial drone panoramic view of Troia, a peninsula located in Grandola Municipality, next to Sado River estuary, Alentejo, Portugal, Europe
The main house of the ancient Tusayan Ruins at Grand Canyon South Rim, UNESCO World Heritage Site, Arizona, United States of America, North America
Lindblad Expeditions guests explore Cape Flora on Northbrook Island in Franz Josef Land, Russia, Arctic Ocean, Eurasia
The remains of the camp where Fridtjof Nansen over-wintered with Hjalmar Johansen in 1895-96, Franz Josef Land, Russia, Arctic Ocean, Eurasia
Curious walrus (Odobenus rosmarus rosmarus) near Apollo Island in Franz Josef Land, Russia, Arctic Ocean, Eurasia
Aerial view taken by drone of iceberg in Jokusarloon Glacier Lagoon during a summer day, Iceland, Polar Regions
Aerial view taken by drone of iceberg in Fjallsjokull Glacier Lagoon during a summer day, Iceland, Polar Regions
California sea lion (Zalophus californianus), with snorkeler at Los Islotes, Baja California Sur, Mexico, North America
California sea lion (Zalophus californianus), with photographer at Los Islotes, Baja California Sur, Mexico, North America
California sea lion (Zalophus californianus), with photographer at Los Islotes, Baja California Sur, Mexico, North America
California sea lion (Zalophus californianus), with snorkeler at Los Islotes, Baja California Sur, Mexico, North America
Small waterfall on the Lonfearn Burn near Brothers' Point (Rubha nam Brathairean) the easternmost point of the Trotternish, Brothers' Point, Trotternish Peninsula, Skye, Inner Hebrides, Scotland, United Kingdom, Europe
Footprints of large plant-eating Jurassic Saurapod dinosaurs, an important middle Jurassic find on the north east coast in 2018, Brothers' Point (Rubha nam Brathairean), Trotternish Peninsula, Skye, Inner Hebrides, Scotland, United Kingdom, Europe
View over the mountainous scenery around Andalsnes, More og Romsdal, Norway, Scandinavia, Europe
The Lindblad Expedition ship National Geographic Explorer near a glacier in the Svalbard Archipelago, Norway, Arctic, Europe
The Lindblad Expeditions ship National Geographic Sea Bird operating in Glacier Bay National Park, UNESCO World Heritage Site, Southeast Alaska, United States of America, North America
Guest from the Lindblad Expeditions ship National Geographic Sea Bird behind a mushroom or toadstool in Southeast Alaska, United States of America, North America
Tufts of grass and El Misti and Chachani volcanoes, Salinas y Aguada Blanca National Reserve, Arequipa Region, Peru, South America
Sgwd Gwladys waterfall, Pyrddin Gorge, Pontneddfechan, Neath Valley, South Wales United Kingdom, Europe
Grand Canyon, Moran Point, Grand Canyon National Park, UNESCO World Heritage Site, Arizona, United States of America, North America
School of silversides form shapes in the tunnels at Eden Rock, Grand Cayman.
A 10 foot Tiger Shark consumes a large tuna head that was hand-fed by a local Fijian dive guide.
An underwater photographer swims past a large yellow gorgonian fan with a bed of red soft corals beneath it, Fiji.
Fijian dive guide feeds a school of Scissortail Sergeant Major fish, Fiji.
Scuba diver swims by some large sponges off the coast of Bonaire, Caribbean Netherlands.
Sunburst above a diver amongst the reefs in Fiji.
Diver swims through the shallow reef towards shore, Bonaire, Caribbean Netherlands.
Scuba diver and a common spiny lobster, Bonaire, Caribbean Netherlands.
Scuba diver swims by some large sponges off the coast of Bonaire, Caribbean Netherlands.
Scuba diver propels above a large vase sponge, Bonaire, Caribbean Netherlands.
Scuba diver navigates the waters using a diver propulsion vehicle off the coast of Bonaire, Caribbean Netherlands.
Scuba diver swimming underwater amongst sea sponges, Bonaire, Caribbean Netherlands.
Scuba diver swimming underwater amongst sea sponges, Bonaire, Caribbean Netherlands.
Divers hovering above a large pink barrel sponge, Indonesia.
Underwater photographer at the entrance of a cave framed by pink barrel sponges, North Sulawesi, Indonesia.
School of jacks and divers at Liberty Wreck, Bali, Indonesia.
Divers photographing a Giant Grouper, Great Barrier Reef, Queensland, Australia.
Sea anemone and diver, Red Sea, Egypt.
Great white shark (Carcharodon carcharias) swims by divers in a shark cage, Isla Guadalupe, Baja California, Mexico. The divers are feeding the shark jack mackerel (Trachurus symmetricus).
Hiker on ancient path used by villagers to cross the island North to South, on the heights of Santana, Madeira island, Atlantic Ocean, Portugal
Abra Bay, Sao Lourenco peninsula, Madeira island, Atlantic Ocean, Portugal
Views of the abandoned whaling station at Stromness Harbor on South Georgia Island, Southern Ocean
The 11th switchback along the North Kaibab Trail at Grand Canyon North Rim, UNESCO, Arizona, United States of America
Inishbofin island, Connemara, County Galway, Connacht, Republic of Ireland
Camassia Flowers, Kew Gardens, United Kingdom
View of scenery from cruise boat near Armant on the Nile River, Luxor, Egypt, Africa