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Southern right whale (Eubalaena australis) mother being harassed by kelp gull, near Puerto Pyramides, Argentina

Southern right whale (Eubalaena australis) calf surfacing near Puerto Pyramides, Golfo Nuevo, Peninsula Valdez, Argentina

Horse-eye jacks (Caranx latus), schooling in Hol Chan Marine Preserve, inside the Mesoamerican Barrier Reef, Belize

Underwater view of the reef along the circumference of the Great Blue Hole on Lighthouse Reef, UNESCO, Belize

Underwater view of the reef along the circumference of the Great Blue Hole on Lighthouse Reef, UNESCO, Belize

Underwater view of the reef along the circumference of the Great Blue Hole on Lighthouse Reef, UNESCO, Belize

Nurse sharks (Ginglymostoma cirratum), being fed in Hol Chan Marine Preserve, inside the Mesoamerican Barrier Reef, Belize

Nurse sharks (Ginglymostoma cirratum), being fed in Hol Chan Marine Preserve, inside the Mesoamerican Barrier Reef, Belize

Nurse sharks (Ginglymostoma cirratum), being fed in Hol Chan Marine Preserve, inside the Mesoamerican Barrier Reef, Belize

Nurse sharks (Ginglymostoma cirratum), being fed in Hol Chan Marine Preserve, inside the Mesoamerican Barrier Reef, Belize

Nurse sharks (Ginglymostoma cirratum), being fed in shark and ray alley, Caye Caulker, Mesoamerican Barrier Reef, Belize

Nurse shark (Ginglymostoma cirratum), on the sand in Hol Chan Marine Preserve, inside the Mesoamerican Barrier Reef, Belize

Green sea turtle (Chelonia mydas), feeding on the sand near Caye Caulker, inside the Mesoamerican Barrier Reef, Belize

Green sea turtle (Chelonia mydas), surfacing for air near Caye Caulker, inside the Mesoamerican Barrier Reef, Belize

A myriad of fish and coral underwater at Hol Chan Marine Preserve, inside the Mesoamerican Barrier Reef, Belize

Adult sea otter (Enhydra lutris kenyoni) mother and pup in Inian Pass, Southeastern Alaska, United States of America

Adult bald eagle (Haliaeetus leucocephalus) with dead salmon in Inian Pass, Southeast Alaska, United States of America

Northern (Steller) sea lions, (Eumetopias jubatus), hauled out on South Marble Island, Glacier Bay National Park, Alaska, United States of America

Adult humpback whale (Megaptera novaeangliae) breaching along the west side of Chatham Strait in Alaska, United States of America

Adult humpback whale (Megaptera novaeangliae) tail throw among feeding whales in Southeast Alaska, United States of America

A small pod of killer whales (Orcinus orca) encountered in Glacier Bay National Park, Southeast Alaska, United States of America

Harbor seal (Phoca vitulina) hauled out on submerged log in Misty Fjords National Monument, Southeast Alaska, United States of America

Adult fin whale (Balaenoptera physalus) sub-surface feeding in the rich waters off the Svalbard Archipelago, Norway

Corals grow on a shallow reef in Indonesia. This beautiful, tropical region is known for its spectacular reefs and high marine biodiversity.

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.

Garden coral, sponges, and other invertebrates grow in a shallow seagrass meadow in Komodo National Park, Indonesia. This tropical area in the Lesser Sunda Islands is known for both its amazing marine biodiversity as well its infamous dragons.

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

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

Dense Cluster of Mussels Attached to Golden Sand at Low Tide, Abel Tasman National Park, New Zealand

Adult dovekie (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

Seagull nesting on the Lihou islet, Island of Guernsey, Bailiwick of Guernsey, British Crown dependency, English Channel, Europe

Chinstrap penguin (Pygoscelis antarctica), at breeding colony at Half Moon Island, Antarctica, Southern Ocean, Polar Regions

Schooling yellow-tailed surgeonfish (Prionurus punctatus), underwater 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) in the Galapagos Island Archipelago, UNESCO World Heritage Site, Ecuador, South America

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

An Atlantic Puffin (Fratercula arctica), landing on a cliff in Borgarfjaroarhofn, Iceland, Polar Regions

An Atlantic Puffin (Fratercula arctica), on a cliff edge in Borgarfjaroarhofn, Iceland, Polar Regions

Adult red-footed booby (Sula sula) in the Galapagos Island Archipelago, UNESCO World Heritage Site, Ecuador, South America

Galapagos Marine Iguana (Amblyrhynchus cristatus) Santa Cruz island, Galapagos, UNESCO World Heritage Site, Ecuador, South America

Adelie penguins (Pygoscelis adeliae), at breeding colony at Brown Bluff on the eastern side of the Antarctic Peninsula, Antarctica, Polar Regions

Views of the area just outside of Stanley, the capital and only true city, with a cathedral, in the Falkland Islands, South America

Nesting Red-legged Cormorant (Poikilocarbo gaimardi) with chicks, Ballestas Islands, Paracas, Peru, South America

Adelie penguin (Pygoscelis adeliae) adult feeding chick at breeding colony at Brown Bluff, Antarctica, Polar Regions

Gentoo penguin (Pygoscelis papua) adult feeding chick at Hannah Point on Livingston Island, Antarctica, Southern Ocean, Polar Regions

Gentoo penguin (Pygoscelis papua) chick at Jougla Point, Wiencke 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) 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

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

Adult American oystercatcher (Haematopus palliatus galapagensis) feeding chick along the shoreline on Bartolome Island in the Galapagos Island Group, UNESCO World Heritage Site, Ecuador, South America

Adult red-billed tropicbird (Phaethon aethereus) in flight in the Galapagos Island Archipelago, UNESCO World Heritage Site, Ecuador, South America

Iceberg detail in and around the Antarctic Peninsula during the austral summer months, Southern Ocean, Antarctica, Polar Regions

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

Northern giant petrels (Macronectes halli) fighting over the scavenging rights to a dead elephant seal pup at Royal Harbor, South Georgia

Pregnant female southern elephant seal (Mirounga leonina) giving birth on the beach in Stromness Bay, South Georgia Island

Pregnant female southern elephant seal (Mirounga leonina) giving birth on the beach in Stromness Bay, South Georgia Island

Pregnant female southern elephant seal (Mirounga leonina) giving birth on the beach in Stromness Bay, South Georgia Island

Pregnant female southern elephant seal (Mirounga leonina) giving birth on the beach in Stromness Bay, South Georgia Island

Female southern elephant seal (Mirounga leonina) with newborn pup on the beach in Stromness Bay, South Georgia Island

Female southern elephant seal (Mirounga leonina) with newborn pup on the beach in Stromness Bay, South Georgia Island

Female southern elephant seal (Mirounga leonina) with newborn pup on the beach in Stromness Bay, South Georgia Island

Female southern elephant seal (Mirounga leonina) with newborn pup as skuas (Catharacta antarctica) fight for the afterbirth, South Georgia

Female southern elephant seal (Mirounga leonina) with newborn pup on the beach in Stromness Bay, South Georgia Island

Southern elephant seal (Mirounga leonina) pup, called weaners once their mothers stop nursing them, South Georgia Island, Southern Ocean

Adult female southern elephant seal (Mirounga leonina) flipping sand onto its back to cool off on South Georgia Island, Southern Ocean

Skuas (Catharacta antarctica) and female southern elephant seal with newborn pup near abandoned whaling station, Stromness Bay, South Georgia

Southern elephant seal (Mirounga leonina) pup, called weaners once their mothers stop nursing them, South Georgia Island, Southern Ocean

Penguins walk by Southern elephant seal (Mirounga leonina) pup, called a weaner, South Georgia Island, Southern Ocean

Male southern elephant seal (Mirounga leonina) pups mock fighting on South Georgia Island, Southern Ocean

Southern elephant seal (Mirounga leonina) pup, called weaners once their mothers stop nursing, South Georgia Island, Southern Ocean

Southern elephant seal (Mirounga leonina) pup, called weaners once their mothers stop nursing, South Georgia Island, Southern Ocean

Southern elephant seal (Mirounga leonina) pup, called weaners once their mothers stop nursing, South Georgia Island, Southern Ocean

Southern elephant seal (Mirounga leonina) pup, called weaners once their mothers stop nursing, South Georgia Island, Southern Ocean

Male southern elephant seal (Mirounga leonina) pups mock fighting on South Georgia Island, Southern Ocean