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Adult wandering albatross (Diomedea exulans) in flight near the Tristan da Cunha Group, South Atlantic Ocean

Northern rockhopper penguin (Eudyptes moseleyi) covered in spilled oil from the wreck of the MS Oliva, Nightingale island, Tristan da Cunha Group, South Atlantic Ocean

A dawn Zodiac tour of Boatswain Bird Island just off Ascension Island in the southern tropical Atlantic Ocean, South Atlantic Ocean

Young wandering albatross (Diomedea exulans) on the wing near the Antarctic Peninsula, Southern Ocean, Polar Regions

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

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) on Espanola Island in the Galapagos Islands, UNESCO World Heritage Site, Ecuador, South America

The endemic Galapagos marine iguana (Amblyrhynchus cristatus) sneezing excess salt from its nostrils 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

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

King penguin (Aptenodytes patagonicus) breeding and nesting colony on South Georgia Island, Southern Ocean, Polar Regions

Killer whale pod (Orcinus orca), off Punta Colorada, Isla San Jose, Baja California Sur, Mexico, North America

An adult eastern osprey (Pandion haliaetus cristatus), in flight over Montgomery Reef, Kimberley, Western Australia, Australia, Pacific

Snorkeler with golden jellyfish (Mastigias papua etpisoni), in Jellyfish Lake, a marine lake located on Eil Malk island, Rock Islands, Palau, Micronesia, Pacific

An aerial view of the estuary of the Taw and Torridge Rivers, near Bideford and Barnstaple, Devon, England, United Kingdom, Europe

Sandwich Terns (Sterna sandivicensis), in their breeding colony in June, on Brownsea Island, a nature reserve in Poole Harbour, Dorset, England, United Kingdom, Europe

Crab and lobster traps, Inishmore, largest of the Aran Islands, Galway Bay, County Galway, Connacht, Republic of Ireland

California sea lion (Zalophus californianus), porpoising in the water in Puerto Refugio, Baja California, Sea of Cortez, Mexico, North America

A long-beaked common dolphin pod (Delphinus capensis), traveling off Gorda Banks, Baja California Sur, Mexico, North America

Yellow Crowned Night Heron (Nyctanassa Violacea), wading bird of the Americas that feeds on crustacea, Bermuda, Atlantic

Adult white-beaked dolphin (Lagenorhynchus albirostris) surfacing in the Svalbard Archipelago, Norway

Starling murmuration at sunset next to the Brighton Palace Pier, City of Brighton and Hove, East Sussex, England, United Kingdom

Adult California gray whale (Eschrictius robustus), spy-hopping in San Ignacio Lagoon, Baja California, Mexico, North America

Adult king penguins (Aptenodytes patagonicus) returning to sea from the nesting colony at Salisbury Plain, South Georgia, Polar Regions

Adult king penguins (Aptenodytes patagonicus) returning to sea from the nesting colony at Salisbury Plain, South Georgia, Polar Regions

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) feeding on fish at the Puerto Ayora fish market, Santa Cruz Island, Galapagos, 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

Adult macaroni penguins (Eudyptes chrysolophus) porpoising for speed while traveling to breeding colony, South Georgia, Polar Regions

Gentoo penguin (Pygoscelis papua) adult with chicks on Cuverville Island, Antarctica, Southern Ocean, Polar Regions

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

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

Atlantic Puffin (Fratercula arctica), on Skomer Island in July, a nature reserve off the coast of Pembrokeshire, Wales, United Kingdom, Europe

Diaporos island with wild beaches and a kayak on the turquoise water, drone top aerial view, Chalkidiki, Greece

A tube anemone grows on a sandy seafloor in Komodo National Park, Indonesia. This tropical area in the western Pacific harbors an extraordinary array of marine organisms.

Several species of gull feeding on small baitfish in Snow Pass, Southeast Alaska, United States of America, North America

Harbor seals (Phoca vitulina) hauled out on a submerged log in Misty Fjord National Monument, Southeast Alaska, United States of America, North America

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

Expedition ship Expedition operating from Ushuaia, Argentina to the Antarctic Peninsula in Antarctica, Southern Ocean, Polar Regions

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

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

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

The endemic Galapagos marine iguana (Amblyrhynchus cristatus) on Espanola Island in the Galapagos Islands, 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

Guadalupe fur seals (Arctocephalus townsendi), at new haul out on Las Animas Island, Baja California Sur, Sea of Cortez, Mexico, North America

Guadalupe fur seal (Arctocephalus townsendi), at new haul out on Las Animas Island, Baja California Sur, Sea of Cortez, Mexico, North America

Gentoo penguin (Pygoscelis papua) chicks covered with mud and guano on Cuverville Island, Antarctica, Southern Ocean, Polar Regions

Long-beaked common dolphin (Delphinus capensis), leaping with remora in Cabo Pulmo National Marine Park, Baja California Sur, Mexico, North America

The endemic Galapagos marine iguana (Amblyrhynchus cristatus) with a lava lizard on top of its head, Galapagos, UNESCO World Heritage Site, Ecuador, South America

Adult Galapagos brown pelican (Pelecanus occidentalis urinator) 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

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

California sea lions (Zalophus californianus), stampeding on the beach in Puerto Refugio, Baja California, Sea of Cortez, Mexico, North America

California sea lion bulls (Zalophus californianus), hauled out on a small islet off San Marcos Island, Sea of Cortez, Mexico, North America

Adult cape petrels (Daption capense) feeding near Deception Island, Antarctica, Southern Ocean, Polar Regions

California Gray Whale (Eschrichtius robustus) in San Ignacio Lagoon on the Pacific side of the Baja Peninsula, Baja California Sur, Mexico

National Geographic photographer Joel Sartore and his wife Kathy kayaking with a leopard seal near Danco Island, Antarctica

California Gray Whale (Eschrichtius robustus) underwater in San Ignacio Lagoon on the Pacific side of the Baja Peninsula, Baja California Sur, Mexico

National Geographic photographer Joel Sartore and his wife Kathy kayaking with a leopard seal near Danco Island, Antarctica

Blue whale (balaenoptera musculus) A blue whale passes underneath tourists in a small boat. The Gulf of California.

Sperm whale (physeter macrocephalus) A sperm whale under a whale watching boat and tourist. The Gulf of California.

Gray whale (eschrictius robustus) A gray whale sticks the top of its head out of the water beside a boat. Pacific Mexico.

Blue whale (balaenoptera musculus) A blue whale passes underneath tourists in a small boat. The Gulf of California.

Blue whale (balaenoptera musculus) A blue whale raises its tail alongside a tourist in a small boat.The Gulf of California.

Short-finned Pilot Whale (Globicephala macrorhynchus) & whale-watchers. It is by law that whale watchers should stay at least 50meters (150 feet) away from large whales, including Pilot Whale (in picture here). Unless special in-water permits are given, snorkelers can only swim with smaller dolphins, but not big whales. Azores, Portugal, Atlantic.