Striated Caracara (Phalcoboenus australis) pair, Sea Lion Island, Falkland Islands, South America

A snorkeler with a large school of bigeye trevally (Caranx sexfasciatus) in deep water near Cabo Pulmo, Baja California Sur, Mexico, North America

Breaching humpback whale (Megaptera novaeangliae), Ecuador, South America

Playful California sea lions (Zalophus californianus), with mooring ball at Los Islotes, Baja California Sur, Mexico, North America

Humpback Whale (Megaptera novaeangliae) fluke, watched by tourists in zodiac, Torgersen Island, Antarctic Peninsula, Antarctica, Polar Regions

South American sea lions, Otaria flavescens, hauled out on a small islet in the Beagle Channel, Ushuaia, Argentina, South America

Spinetail devil rays (Mobula mobular) engaged in sexual courtship in Honda Bay, Palawan, The Philippines, Southeast Asia, Asia

King penguins coming ashore, Fortuna Bay, South Georgia, South Atlantic

Emperor penguins (Aptenodytes forsteri) and chicks, Snow Hill Island, Weddell Sea, Antarctica, Polar Regions

California gray whale (Eschrichtius robustus) calf above and below with whale watchers in San Ignacio Lagoon, Baja California Sur, Mexico, North America

A humpback whale (Megaptera novaeangliae), tail slapping the surface of the Pacific Ocean off Hawaii, United States of America, Pacific, North America

Bigfin reef squid (Sepioteuthis lessoniana) tending eggs which have been laid along a buoy line, taken at dusk, Lembeh Strait, Indonesia, Southeast Asia, Asia

Brunnich's guillemots (thick-billed murres) (Uria lomvia), Cape Waring, Wrangel Island, UNESCO World Heritage Site, Chuckchi Sea, Chukotka, Russia, Eurasia

Kentarchos beach, Serifos Island, Cyclades, Greek Islands, Greece, Europe

Adult chinstrap penguin (Pygoscelis antarctica), Half Moon Island, South Shetland Islands, Antarctica, Southern Ocean, Polar Regions

Leopard seal (Hydrurga leptonyx) mother and pup, Petermann Island, Antarctica, Southern Ocean, Polar Regions

Resident killer whale bull, Orcinus orca, Cattle Pass, San Juan Island, Washington, United States of America, North America

Fishing boat at fishing harbour in Paracas National Reserve (Reserva Nacional de Paracas), Ica, Peru, South America

Giant sea fan (Gorgonian fan coral) (Annella mollis), Ras Mohammed National Park, Red Sea, Egypt, North Africa, Africa

Three-spot damsel fish (Dascyllus trimaculatus), magnificent anemone (Heteractis magnifica) close-up, Ras Mohammed National Park, off Sharm el-Sheikh, Sinai, Red Sea, Egypt, North Africa, Africa

Chinstrap penguins (Pygoscelis Antarctica) walking up a glacial ice cap, Half Moon Island, South Shetland Island, Antarctic Peninsula, Antarctica, Polar Regions

A curious young polar bear (Ursus maritimus) on the ice in Bear Sound, Spitsbergen Island, Svalbard, Norway, Scandinavia, Europe

Puffins (Fratercula arctica) on small cliffs near Bakkagerdi (Borgafjordur Eystri), East Fjords (Austurland), Iceland, Polar Regions

The gigantic Gruta de Benagil sea cave (Benagil Cathedral), Algarve, Portugal

Clark's anemonefish (Amphiprion clarkii), Southern Thailand, Andaman Sea, Indian Ocean, Southeast Asia, Asia

Pink Dendronephthya, soft coral, and anemonefish, Southern Thailand, Andaman Sea, Indian Ocean, Asia

Cave of Poetry (Grotta della Poesia), Roca Vecchia, Lecce, Salento, Apulia, Italy

Sea lions moving together in sea, Great Bear Rainforest, British Columbia, Canada, North America

Elegant tern (Thalasseus elegans) in flight, Isla Rasa, Gulf of California (Sea of Cortez), Baja California, Mexico, North America

Humpback whale (Megaptera novaeangliae) flukes, Gulf of California (Sea of Cortez), Baja California Sur, Mexico, North America

Adult humpback whale (Megaptera novaeangliae) breach, Gulf of California (Sea of Cortez), Baja California Sur, Mexico, North America

Short-finned pilot whale (Globicephala macrorhynchus) cow and calf, Isla San Pedro Martir, Gulf of California (Sea of Cortez), Baja California Norte, Mexico, North America

Galapagos sea lions (Zalophus wollebaeki), Gardner Bay, Espanola Island, Galapagos Islands, UNESCO World Heritage Site, Ecuador, South America

Blue-footed booby (Sula nebouxii), Cormorant Point, Floreana Island, Galapagos Islands, UNESCO World Heritage Site, Ecuador, South America

A snorkeler with a large school of bigeye trevally (Caranx sexfasciatus) in deep water near Cabo Pulmo, Baja California Sur, Mexico, North America

Adult grey-headed albatross, Thalassarche chrysostoma, on nest on tussock grass at Elsehul, South Georgia Island, Atlantic Ocean

Giant stingray (Dasyatis spp), being fed by local guide in the shallow waters of Stingray City, Society Islands, French Polynesia, South Pacific, Pacific

Tourist and tour guide swimming with a whale shark (Rhincodon typus) in Honda Bay, Palawan, The Philippines, Southeast Asia, Asia

Whale shark (Rhincodon typus) vertical suction feeding on a shoal of red fish, Honda Bay, Palawan, The Philippines, Southeast Asia, Asia

African skimmer (Rynchops flavirostris) at sunset, Chobe National Park, Botswana, Africa

Magellanic oyster catcher (Haematopus leucopodus) and Sea Lion Lodge, Sea Lion Island, Falkland Islands, South America

Whale shark (Rhincodon typus) feeding at night, Maldives, Indian Ocean, Asia

Whale shark (Rhincodon typus) feeding at night, Maldives, Indian Ocean, Asia

Blue-footed boobies (Sula nebouxii) plunge-diving for small fish off Rabida Island, Galapagos Islands, UNESCO World Heritage Site, Ecuador, South America

Adult green sea turtle (Chelonia mydas) underwater near Rabida Island, Galapagos Islands, Ecuador, South America

Adult green sea turtle (Chelonia mydas) underwater near camera, Isabela Island, Galapagos Islands, Ecuador, South America

Mother polar bear with one cub (Ursus Maritimus), Wrangel Island, UNESCO World Heritage Site, Chuckchi Sea, Chukotka, Russian Far East, Russia, Eurasia

Group of walrus (Odobenus rosmarus) resting on the ice, Cape Waring, Wrangel Island, UNESCO World Heritage Site, Chuckchi Sea, Chukotka, Russia, Eurasia

Moulting adult king penguins, Aptenodytes patagonicus, in the snow at Grytviken, South Georgia Island, Atlantic Ocean

A small pod of Type B killer whales (Orcinus orca), near Cierva Cove, Antarctica, Southern Ocean, Polar Regions

Adult gentoo penguins (Pygoscelis papua) leaping onto ice in Mickelson Harbor, Antarctica, Southern Ocean, Polar Regions

Medium shoal or school of blue striped snapper (Lutjanus kasmira), Naama Bay, off Sharm el-Sheikh, Sinai, Red Sea, Egypt, North Africa, Africa

Coral reef scene, Ras Mohammed National Park, Sharm el-Sheikh, Red Sea, Egypt, North Africa, Africa

Red sea anemone fish (Amphiprion bicinctus) and magnificent anemone, (Heteractis magnifica), Ras Mohammed National Park, off Sharm el-Sheikh, Sinai, Red Sea, Egypt, North Africa, Africa

Adult black-legged kittiwake (Rissa tridactyla) on nest, Svalbard Archipelago, Barents Sea, Norway, Scandinavia, Europe

Adult polar bear (Ursus maritimus) on the ice in Gashamna (Goose Bay), Spitsbergen Island, Svalbard, Norway, Scandinavia, Europe

Southern elephant seal (Mirounga leonina) male roaring, Sea Lion Island, Falkland Islands, South Atlantic, South America

Thorny seahorse (Hippocampus hystrix), Southern Thailand, Andaman Sea, Indian Ocean, Southeast Asia, Asia

Elegant tern (Thalasseus elegans) and Heermann's gull (Larus heermanni) breeding colony, Isla Rasa, Gulf of California (Sea of Cortez), Baja California, Mexico, North America

San Esteban spiny-tailed iguana (Ctenosaura conspicuosa) on cardon cactus, Isla San Esteban, Gulf of California (Sea of Cortez), Baja California, Mexico, North America

Adult red-billed tropicbird (Phaethon aethereus), Isla San Pedro Martir, Gulf of California (Sea of Cortez), Baja California, Mexico, North America

Spotted eagle ray (Aetobatus narinari) underwater, Leon Dormido Island, San Cristobal Island, Galapagos Islands, Ecuador, South America

Galapagos sea lions (Zalophus wollebaeki) underwater, Champion Island, Galapagos Islands, Ecuador, South America

Reef scene with sea fan, Komodo, Indonesia, Southeast Asia, Asia

School of fishes and tropical lagoon, Maldives, Indian Ocean, Asia

Adult grey-headed albatross, Thalassarche chrysostoma, on nest on tussock grass at Elsehul, South Georgia Island, Atlantic Ocean

An adult light-mantled albatross, Phoebetria palpebrata, landing at nesting site in Elsehul, South Georgia Island, Atlantic Ocean

Terns being fed by local guide with back tattoo in the shallow waters of Stingray City, Moorea, Society Islands, French Polynesia, South Pacific, Pacific

New Zealand Sea Lions (Phocarctos hookeri) at Otago Peninsula, Dunedin, Otago, South Island, New Zealand, Pacific

Emperor penguin (Aptenodytes forsteri) and chick, Snow Hill Island, Weddell Sea, Antarctica, Polar Regions

Magellanic snipe (Gallinago magellanica magellanica) hides in grassland, Sea Lion Island, Falkland Islands, South America

Rockhopper penguin (Eudyptes chrysocome) vocalisation, Rockhopper Point, Sea Lion Island, Falkland Islands, South America

Heron wading along water's edge on tropical beach, Maldives, Indian Ocean, Asia

A snorkeler with a large school of bigeye trevally (Caranx sexfasciatus) in deep water near Cabo Pulmo, Baja California Sur, Mexico, North America

A sea lion, Galapagos Islands, Ecuador, South America

Red-billed gull (Chroicocephalus scopulinus) in gannet breeding colony at Cape Kidnappers, Napier, North Island, New Zealand, Pacific

South American sea lion bull, Otaria flavescens, attempting to mate on a small islet in the Beagle Channel, Argentina, South America

Mother polar bear with two cubs (Ursus Maritimus), Wrangel Island, UNESCO World Heritage Site, Chuckchi Sea, Chukotka, Russian Far East, Russia, Eurasia

Gannet (Morus bassanus) in flight above the sea at Bempton cliffs, Yorkshire, England, United Kingdom, Europe

Adult chinstrap penguin (Pygoscelis antarctica), Half Moon Island, South Shetland Islands, Antarctica, Southern Ocean, Polar Regions

Adult leopard seal (Hydrurga leptonyx), Snow Island, South Shetland Islands, Antarctica, Southern Ocean, Polar Regions

Female crabeater seal (Lobodon carcinophaga), Cuverville Island, near the Antarctic Peninsula, Antarctica, Southern Ocean, Polar Regions

Close-up of eyes of a bluespotted stingray (Taeniura lymma), Naama Bay, off Sharm el-Sheikh, Sinai, Red Sea, Egypt, North Africa, Africa

An adult brown skua (Stercorarius spp), in flight with a stolen penguin egg at Barrientos Island, Antarctica, Polar Regions

Adult brown pelican (Pelecanus occidentalis) plunge-diving, Gulf of California (Sea of Cortez), Baja California, Mexico, North America

Sperm whale (Physeter macrocephalus) at sunset, Isla San Pedro Martir, Gulf of California (Sea of Cortez), Baja California Norte, Mexico, North America

Galapagos sea lion (Zalophus wollebaeki) pup, Gardner Bay, Espanola Island, Galapagos Islands, UNESCO World Heritage Site, Ecuador, South America

Two Rockhopper penguins (Eudyptes chrysocome chrysocome) showing affection, Sea Lion Island, Falkland Islands, South America

California sea lions (Zalophus californianus) underwater at Los Islotes, Baja California Sur, Mexico, North America

Whale shark (Rhincodon typus) with golden trevally (Gnathanodon speciosus), Honda Bay, Palawan, The Philippines, Southeast Asia, Asia

Snorkeller with a juvenile whale shark (Rhincodon typus) feeding on the suface 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

Bald eagles (Haliaetus leucocephalus) in February, Alaska, USA, North America

Humpback whale (Megaptera novaeangliae) breaching, Hervey Bay, Queensland, Australia, Pacific

Humpback whale (Megaptera novaeangliae) adult surfacing and exhaling, Hervey Bay, Queensland, Australia, Pacific

Humpback whales (Megaptera novaeangliae) mother and calf, Hervey Bay, Queensland, Australia, Pacific

White pelican, Pelecanus onocrotalus, Walfish Bay, west coast, Namibia, Africa

Rockhopper penguin (Eudyptes chrysocome) courtship behaviour, Rockhopper Point, Sea Lion Island, Falkland Islands, South America

Close-up of a juvenile black-crowned night heron (Nycticorax nycticorax falklandicus), Sea Lion Island, Falkland Islands, South Atlantic, South America

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