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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

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

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

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

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

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

Marine iguana (Amblyrhynchus cristatus), Suarez Point, Isla Espanola (Hood 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

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

Galapagos marine iguanas (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

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), 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

Galapagos marine iguana (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 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

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

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

A beautiful nudibranch (Halgerda batangas) crawls on the sandy seafloor of Lembeh Strait, Indonesia. Lembeh Strait is known for its diverse array of bizarre marine organisms.

A tiny cleaner shrimp removes parasites from a Black-finned snake eel (Ophichthus cephalozona) on a sandy seafloor in Indonesia. This tropical region, within the Coral Triangle, is home to an incredible variety of marine life.

A slightly bleached staghorn coral colony grows in shallow water in the Solomon Islands. This Melanesian region is known for its spectacular marine biodiversity.

Blacktip reef sharks swim just under the surface in the Solomon Islands. This beautiful Melanesian region is known for its spectacular reefs and high marine biodiversity.

Detail of anchor coral tentacles (Euphyllia sp.) growing on a reef in Indonesia. This area is known for its high marine biodiversity.

Soft leather corals grow in the shallow waters in the Solomon Islands, Melanesia. This region, in the eastern part of the Coral Triangle, harbors spectacular marine biodiversity and is known for its beautiful reefs.

False clownfish (Amphiprion ocellaris) swim near their host anemone in Alor, Indonesia. This remote region is known for its beautiful reefs and spectacular marine biodiversity.

Beautiful soft coral colonies grow on a healthy coral reef in Komodo National Park, Indonesia. This tropical region in Indonesia is known for its spectacular coral reefs and high marine biodiversity.

Fragile corals grow in extremely shallow water in Komodo National Park, Indonesia. This part of the Coral Triangle is known for its high marine biodiversity and is a popular destination for scuba divers and snorkelers.

A diverse array of corals grow in Raja Ampat, Indonesia. This beautiful region is known for its spectacular reefs and high marine biodiversity.

A beautiful nudibranch (Hypselodoris bullockii) crawls slowly across a reef in Indonesia. This tropical region, within the Coral Triangle, is home to an incredible variety of marine life.

A beautiful set of tiny tunicates grows on a reef in Indonesia.This tropical region, within the Coral Triangle, is home to an incredible variety of marine life.

Vibrant soft coral colonies grow on a reef dropoff in Lembeh Strait, Indonesia. This area is known for its spectacular marine biodiversity.

Reef-building corals thrive in shallow water in Raja Ampat, Indonesia. This remote region is known for its beautiful reefs and spectacular marine biodiversity.

Delicate corals grow on a shallow reef near the island of Flores in Indonesia. This beautiful region is known for its spectacular reefs and high marine biodiversity.

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

Coral polyps (Galaxea sp.) wait for plankton on a reef in Komodo National Park, Indonesia. This beautiful area harbors extraordinary marine biodiversity and is a popular destination for divers and snorkelers.

A Clark's anemonefish (Amphiprion clarkii) snuggles into the tentacles of its host anemone in Komodo National Park, Indonesia. This beautiful area harbors extraordinary marine biodiversity and is a popular destination for divers and snorkelers.

A pair of robust ghost pipefish (Solenostomus cyanopterus) hover above the seafloor in Komodo National Park, Indonesia. This tropical area in the western Pacific harbors an extraordinary array of marine organisms.

A beautiful starfish (Linckia laevigata) lays on a thriving reef in Indonesia. This tropical region, within the Coral Triangle, is home to an incredible variety of marine life.

A rare roughsnout ghost pipefish (Solenostomus paegnius) hovers above the seafloor in Komodo National Park, Indonesia. This beautiful area harbors extraordinary marine biodiversity and is a popular destination for divers and snorkelers.

A snowflake moray eel (Echidna nebulosa) pokes its head out of a hole in Komodo National Park, Indonesia. This beautiful area harbors extraordinary marine biodiversity and is a popular destination for divers and snorkelers.

A venomous stonefish (Synanceia verrucosa) camouflages itself in sand in Komodo National Park, Indonesia. This tropical region in Indonesia is known for its spectacular coral reefs and high marine biodiversity.

A flathead fish camouflages itself in the sandy seafloor of Komodo National Park, Indonesia. This tropical region in Indonesia is known for its spectacular coral reefs and high marine biodiversity.

A live sundial shell (Architectonica perspectiva) crawls across the seafloor in Komodo National Park, Indonesia. This tropical region in Indonesia is known for its spectacular coral reefs and high marine biodiversity.

Detail of a large coral polyp in Komodo National Park, Indonesia. This tropical region in Indonesia is known for its spectacular coral reefs and high marine biodiversity.

Detail of an encrusting sponge growing on a reef in Komodo National Park, Indonesia. This tropical region in Indonesia is known for its spectacular coral reefs and high marine biodiversity.

Detail of a mushroom coral (Fungia sp.) on a reef in Komodo National Park, Indonesia. This tropical region in Indonesia is known for its spectacular coral reefs and high marine biodiversity.

Sunlight sparkles through a table coral (Acropora sp.) in Komodo National Park, Indonesia. This tropical region in Indonesia is known for its spectacular coral reefs and high marine biodiversity.

A pair of Ceylon nudibranchs (Gymnodoris ceylonica) mate on a sandy slope in Komodo National Park, Indonesia. This tropical region in Indonesia is known for its spectacular coral reefs and high marine biodiversity.

A lionfish (Pterois volitans) displays its venomous spines in Komodo National Park, Indonesia. This tropical area in the western Pacific harbors an extraordinary array of marine organisms.

A shortfin lionfish (Dendrochirus brachypterus) lays on the seafloor waiting for prey to swim near in Indonesia. This tropical region, within the Coral Triangle, is home to an incredible variety of marine life.

Abstract of a mushroom coral (Fungia sp.) growing on a reef in Indonesia. This tropical region, within the Coral Triangle, is home to an incredible variety of marine life.

A Black-finned snake eel (Ophichthus cephalozona) pokes its head out of a sandy seafloor in Indonesia. This tropical region, within the Coral Triangle, is home to an incredible variety of marine life.