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Group of striped dolphins (Stenella coeruleoalba) swimming, Strait of Gibraltar, Costa de la Luz, Andalucia (Andalusia), Spain, Europe

Humpback whale (Megaptera novaeangliae), and snow coverd mountains in the background, Francisco Coloane Marine Park, Strait of Magallanes (Magellan), Patagonia, Chile, South America

Tail (fluke) of a humpback whale (Megaptera novaeangliae), Francisco Coloane Marine Park, Strait of Magallanes (Magellan), Patagonia, Chile, South America

Manta ray (Manta birostris) feeding on zooplankton by extending its cephalic lobes, Yum Balam Marine Protected Area, Quintana Roo, Mexico, North America

Whale shark (Rhincodon typus) feeding at the surface on zooplankton, mouth open, known as ram feeding, Yum Balam Marine Protected Area, Quintana Roo, Mexico, North America

Male manta ray with almost pure white ventral surface, may be a new species, for now known as Manta alfredi, Yum Balam Marine Protected Area, Quintana Roo, Mexico, North America

Eagle rays (Mobula hypostoma) common in this area and often seen feeding on zooplankton in large groups, Yum Balam Marine Protected Area, Quintana Roo, Mexico, North America

Scientist and whale shark (Rhincodon typus) feeding at the surface on zooplankton, mouth open, known as ram feeding, Yum Balam Marine Protected Area, Quintana Roo, Mexico, North America

Manta ray (Manta birostris) feeding on zooplankton by extending its cephalic lobes, Yum Balam Marine Protected Area, Quintana Roo, Mexico, North America

Biologist taking skin sample from a whale shark to determine what plankton types the animal has been feeding on, Yum Balam Marine Protected Area, Quintana Roo, Mexico, North America

Scientist free diving to make a photo identification of an individual manta ray (Manta birostris), Yum Balam Marine Protected Area, Quintana Roo, Mexico, North America

Green sea turtles (Chelonia mydas) common around Pom Pom Island, an important nesting grounds for these marine turtles, Celebes Sea, Sabah, Malaysia, Southeast Asia, Asia

Tourist photographing Southern Right whale (Eubalaena australis) mother and calf, from Marine Dynamics whale watching boat, Western Cape, South Africa, Africa

Marine iguana (Amblyrhynchus cristatus), Suarez Point, Isla Espanola (Hood Island), Galapagos Islands, UNESCO World Heritage Site, Ecuador, South America

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

Lava lizard (Microlophus spp,) on top of marine iguana (Amblyrhynchus cristatus), Las Bachas, Santa Cruz Island, Galapagos Islands, Ecuador, South America

Lava lizard (Microlophus spp,) on top of marine iguana (Amblyrhynchus cristatus), Las Bachas, Santa Cruz Island, Galapagos Islands, Ecuador, South America

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

Humpback whale (Megaptera novaeangliae) flukes-up dive in Monterey Bay National Marine Sanctuary, California, United States of America, North America

Lava lizard (Microlophus spp,) on top of marine iguana (Amblyrhynchus cristatus), Las Bachas, Santa Cruz Island, Galapagos Islands, Ecuador, South America

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

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

Galapagos marine iguana (Amblyrhynchus cristatus), Las Bachas, Santa Cruz Island, Galapagos Islands, Ecuador, South America

Hawaiian goose (nene) (Branta sandvicensis), at Historic Kilauea Lighthouse, Kilauea Point National Wildlife Refuge, Kauai, Hawaii, United States of America, Pacific

Marine iguana (Amblyrhynchus cristatus), Suarez Point, Isla Espanola (Hood Island), Galapagos Islands, UNESCO World Heritage Site, Ecuador, South America

Marine Iguana feeding at Sea, Amblyrhynchus cristatus, Cabo Douglas, Fernandina Island, Galapagos, Ecuador

Galapagos marine iguana (Amblyrhynchus cristatus), Las Bachas, Santa Cruz Island, Galapagos Islands, Ecuador, South America

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

Marine iguana (Amblyrhynchus cristatus), Espinosa Point, Isla Fernandina (Fernandina 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

Marine Iguana feeding at Sea, Amblyrhynchus cristatus, Cabo Douglas, Fernandina Island, Galapagos, Ecuador

Marine Iguana feeding at Sea, Amblyrhynchus cristatus, Cabo Douglas, Fernandina Island, Galapagos, Ecuador

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

Marine Iguana feeding at Sea, Amblyrhynchus cristatus, Cabo Douglas, Fernandina Island, Galapagos, Ecuador

Galapagos marine iguana (Amblyrhynchus cristatus), Puerto Ayora, Santa Cruz Island, Galapagos Islands, Ecuador, South America

Marine Iguana feeding at Sea, Amblyrhynchus cristatus, Cabo Douglas, Fernandina Island, Galapagos, Ecuador

Marine Iguana feeding at Sea, Amblyrhynchus cristatus, Cabo Douglas, Fernandina Island, Galapagos, Ecuador

Marine Iguana feeding at Sea, Amblyrhynchus cristatus, Cabo Douglas, Fernandina Island, Galapagos, Ecuador

Marine Iguana feeding at Sea, Amblyrhynchus cristatus, Cabo Douglas, Fernandina Island, Galapagos, Ecuador

Marine Iguana feeding at Sea, Amblyrhynchus cristatus, Cabo Douglas, Fernandina Island, Galapagos, Ecuador

Marine Iguana feeding at Sea, Amblyrhynchus cristatus, Cabo Douglas, Fernandina Island, Galapagos, Ecuador

Marine Iguana feeding at Sea, Amblyrhynchus cristatus, Cabo Douglas, Fernandina Island, Galapagos, Ecuador

Marine iguana (Amblyrhynchus cristatus), Isabela Island, Galapagos Islands, Ecuador, Pacific, South America

A colorful and healthy coral reef thrives in shallow water in Raja Ampat, Indonesia. This remote region is known as the heart of the Coral Triangle due to its extraordinary marine biodiversity.

Colorful chocolate chip starfish lie scattered on the floor of a 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.

California sea lions (Zalophus californianus), grouped together on a channel marker off Newport Beach, California, United States of America, North America

View across the still waters of the marina, early morning, Porto Cervo, Arzachena, Sassari, Sardinia, Italy, Mediterranean, Europe

Young Galapagos sea lions (Zalophus wollebaeki) at play underwater in the Galapagos Island Archipelago, UNESCO World Heritage Site, Ecuador, South America

Adult bull southern elephant seal (Mirounga leonina) flipping sand onto its back to cool off on 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

Adult gentoo penguin (Pygoscelis papua) feeding minutes-old newly hatched chick at Gold Harbor on South Georgia

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

Adult rockhopper penguins (Eudyptes chrysocome chrysocome) at breeding and molting colony on New Island, Falkland Islands

Adult rockhopper penguins (Eudyptes chrysocome chrysocome) at breeding and molting colony on New Island, Falkland Islands

Adult rockhopper penguins (Eudyptes chrysocome chrysocome) at breeding and molting colony on New Island, Falkland Islands

Adult Imperial Shag (Phalacrocorax (atriceps) atriceps) exhibiting intense breeding plumage, New Island, Falkland Islands

Black-browed albatross (Thalassarche melanophrys) breeding colony on Steeple Jason Island in the Falkland Islands

Black-browed albatross (Thalassarche melanophrys) breeding colony on Steeple Jason Island in the Falkland Islands

Black-browed albatross (Thalassarche melanophrys) breeding colony on Carcass Island in the Falkland Islands

Black-browed albatross (Thalassarche melanophrys) breeding colony on Carcass Island in the Falkland Islands

Magellanic penguin (Spheniscus magellanicus) at a breeding and molting site in Estancia San Lorenzo, Argentina

Magellanic penguins (Spheniscus magellanicus) at a breeding and molting site in Estancia San Lorenzo, Argentina

Magellanic penguins (Spheniscus magellanicus) at a breeding and molting site in Estancia San Lorenzo, Argentina

Southern Right Whale (Eubalaena australis) adult surfacing near Puerto Pyramides, Peninsula Valdez, Argentina

Magellanic penguin (Spheniscus magellanicus) at a breeding and molting site in Estancia San Lorenzo, Argentina

Magellanic penguins (Spheniscus magellanicus) at a breeding and molting site in Estancia San Lorenzo, Argentina

Southern stingray (Hypanus americanus) over sand in shark and ray alley, Caye Caulker, Mesoamerican Barrier Reef, Belize

West Indian manatee (Trichechus manatus), on the sand near Caye Caulker, inside the Mesoamerican Barrier Reef, Belize

West Indian manatee (Trichechus manatus), with snorkeler 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

Marine iguana (Amblyrhynchus cristatus), Floreana (Charles) Island, Galapagos, UNESCO World Heritage Site, Ecuador, South America

An adult sea otter (Enhydra lutris), feeding on a razor clam in Monterey Bay National Marine Sanctuary, California, United States of America, North America