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An adult humpback whale (Megaptera novaeangliae), flukes-up dive near boat in Kenai Fjords National Park, Alaska, United States of America, North America
An adult blue whale (Balaenoptera musculus) flukes-up dive in Monterey Bay National Marine Sanctuary, California, United States of America, North America
An adult humpback whale (Megaptera novaeangliae), flukes-up dive in Dallmann Bay, Antarctica, Polar Regions
An adult humpback whale (Megaptera novaeangliae), flukes up dive in Monterey Bay Marine Sanctuary, California, United States of America, North America
Adult humpback whale (Megaptera novaeangliae), flukes-up dive near Morris Reef, Southeast Alaska, United States of America, North America
Mabul Island Dive Centre, Sabah, Borneo, Malaysia, Southeast Asia, Asia
Adult humpback whale (Megaptera novaeangliae), flukes-up dive in Wilhelmina Bay, Antarctica, Polar Regions
An adult blue Whale (Balaenoptera musculus), flukes-up dive off the small town of Mirissa in southern Sri Lanka, Asia
An adult blue whale (Balaenoptera musculus) flukes-up dive in Monterey Bay National Marine Sanctuary, California, United States of America, North America
Humpback whale (Megaptera novaeangliae) flukes-up dive in Dallmann Bay, Antarctica, Polar Regions
Adult humpback whale (Megaptera novaeangliae), flukes-up dive in Wilhelmina Bay, Antarctica, Polar Regions
Adult humpback whale (Megaptera novaeangliae), flukes-up dive in Wilhelmina Bay, Antarctica, Polar Regions
Adult gray whale (Eschrichtius robustus), flukes-up dive in Magdalena Bay on the Baja Peninsula, Baja California Sur, Mexico, North America
An adult bowhead whale (Balaena mysticetus), flukes-up dive off Somerset Island, Nunavut, Canada, North America
Man preparing to dive at Chankanaab Park, famous for its superb coral reef, on the island of Cozumel, off the Yucatan Peninsula, Mexico, North America
Dive boat with mainland and Manadotua Island beyond, off this coral fringed holiday and scuba island. Bunaken, North Sulawesi, Indonesia, Southeast Asia, Asia
Free diver gets ready to explore the underwater landscape floating down Olho D'Agua and Prata rivers, Bonito, Mato Grosso do Sul, Brazil, South America
Guests from the Lindblad Expedition ship National Geographic Explorer take the Polar Plunge off ice floe in the Weddell Sea, Antarctica, Southern Ocean
Guests from the Lindblad Expedition ship National Geographic Explorer taking the "polar plunge" in the Svalbard Archipelago, Norway
Guests from the Lindblad Expedition ship National Geographic Explorer take the Polar Plunge off ice floe in the Weddell Sea, Antarctica, Southern Ocean
Tiny Red Goby (Pleurosicya sp) Two resting on coral.
Mabul Island, Borneo, Malaysia
(RR)
Free diver gets ready to explore the underwater landscape floating down Olho D'Agua and Prata rivers, Bonito, Mato Grosso do Sul, Brazil, South America
Guests from the Lindblad Expedition ship National Geographic Explorer taking the "polar plunge" in the Svalbard Archipelago, Norway
Guests from the Lindblad Expedition ship National Geographic Explorer taking the "polar plunge" in the Svalbard Archipelago, Norway
Underwater photographer explores the underwater landscape floating down Olho D'Agua River, Bonito, Mato Grosso do Sul, Brazil, South America
Guests from the Lindblad Expedition ship National Geographic Explorer take the Polar Plunge off ice floe in the Weddell Sea, Antarctica, Southern Ocean
Guests from the Lindblad Expedition ship National Geographic Explorer take the Polar Plunge off ice floe in the Weddell Sea, Antarctica, Southern Ocean
Dive boat at shore with clear blue water, Tahiti, French Polynesia.
Friends watching man do cannonball dive into urban swimming pool
Olive ridley turtle hatchling, Lepidochelys olivacea, Costa do Sauipe, Bahia, Brazil (South Atlantic)
Crab preying on dead portuguese man-of-war, Physalia physalis, Praia do Forte, Bahia, Brazil (South Atlantic)
Olive ridley turtle hatchling, Lepidochelys olivacea, Costa do Sauipe, Bahia, Brazil (South Atlantic)
Electric eel, Electrophorus electricus; this air-breathing freshwater fish can deliver an electric shock up to 650 volts and naturally occurs in the Amazon river basins of South America including Brazil and Guyanas; photo taken in captivity.
Juvenile and adult pink anemonefish in sea anemone, Amphiprion perideraion, Fila Reef, Port Vila, Vanuatu (S. Pacific).
Saddled butterflyfish, Chaetodon ephippium, Namu atoll, Marshall Islands (N. Pacific).
Beaked Whale stranded on coral reef during low tide, Mesoplodon sp., Mili, Marshall Islands (N. Pacific)..
Split image of Smallspotted dart, Trachinotus baillonii, swimming along the sandy shore at dusk, Rongelap, Marshall Islands, Micronesia
Split image of staghorn coral, Acropora sp., and uninhabited island, Ailuk atoll, Marshall Islands, Pacific
Common lionfish, Pterois volitans, close-up, Sabang wreck, Puerto Galera, Mindoro, Philippines.
Whitetip reef shark, Triaenodon obesus, Namu atoll, Marshall Islands (N. Pacific).
Red (Lace) coral, Distichopora violacea, feather stars, and juvenile gray reef shark, Carcharhinus amblyrhynchos, Ailuk atoll, Marshall Islands, Pacific
Great barracuda, Sphyraena barracuda, and divers, Molasses Reef, Key Largo, Florida, USA, Atlantic Ocean
Over under image of marshallese boy smiling underwater next to coral reef and coconut trees lining the shore of Majikin Island, Namu atoll, Marshall Islands (N. Pacific).
Whitetip reef shark, Triaenodon obesus, resting in cave, Namu atoll, Marshall Islands (N. Pacific).
Large group of pink whipray or Tahitian stingray, Himantura fai, Rongelap, Marshall Islands, Micronesia
Fluted giant clam, Tridacna squamosa, siphon detail, Namu atoll, Marshall Islands (Pacific).
Giant clam, Tridacna gigas, siphon detail, Rongelap, Marshall Islands, Micronesia
Pink anemone fish, Amphiprion periderion, on magnificent sea anemone, Heteractis magnifica, Dumaguete, Negros, Philippines.
Young woman swims underwater in the beautiful waters of Menorca, Spain
Tourists on a snorkeling excursion to view black tipped sharks and sting rays in the shallow waters of the Bora Bora lagoon, Moorea, French Polynesia, Society Islands, South Pacific. Cook's Bay.
Starry night octopus, Octopus luteus, foraging on coral reef at night, Malapascua, Cebu, Philippines, Visayan Sea.
Bigfin reef squid, Sepioteuthis lessoniana, schooling, Rongelap, Marshall Islands, Micronesia
Horseshoe clam, Hippopus hippopus, Rongelap, Marshall Islands, Micronesia
Ornate ghost pipefish, Solenostomus paradoxus, Dumaguete, Negros Island, Philippines.
French angelfish, Pomacanthus paru, Ilha rata, Fernando de Noronha national marine sanctuary, Pernambuco, Brazil (S. Atlantic)
Wire coral goby, Bryaninops yongei, on wire coral, Cirripathes anguina, Namu atoll, Marshall Islands (N. Pacific).
Scalloped hammerhead shark, Sphyrna lewini, Kaneohe Bay, Oahu, Hawaii (N. Pacific).
Snorkeling excursion in the shallow waters of the Bora Bora lagoon, Moorea, French Polynesia, Society Islands, South Pacific. Cook's Bay.
Albatros. Tourists on a snorkeling excursion to view black tipped sharks and sting rays in the shallow waters of the Bora Bora lagoon, Moorea, French Polynesia, Society Islands, South Pacific. Cook's Bay.
Regal angelfish, Pygoplites diacanthus, Namu atoll, Marshall Islands (N. Pacific).
Nudibranch, Jorunna funebris, feeding on blue sponge, Haliclona sp., Monkey beach, Puerto Galera, Mindoro, Philippines.
Mandarinfish, Synchiropus splendidus, male, Malapascua, Cebu, Philippines, Visayan Sea.
Thrill seekers experience cage diving with Galapagos sharks, Carcharhinus galapagensis, North shore, Oahu, Hawaii, USA
False clown anemone fish, Amphiprion ocellaris, Dauin, Dumaguete, Negros, Philippines.
Reef cuttlefish, Sepia sp., displaying defensive posture, Dumaguete, Negros Island, Philippines.
Needle cuttlefish, Sepia aculeata, front view at night, Dumaguete, Negros Island, Philippines.
Nudibranch, Chromodoris magnifica, Dumaguete, Negros Island, Philippines.
Regal angelfish, Pygoplites diacanthus, Hideaway island, Port Vila, Vanuatu.
An outrigger boat used for reef excursions in Bora Bora, French Polynesia Society Island.
Snorkeling excursion in the shallow waters of the Bora Bora lagoon, Moorea, French Polynesia, Society Islands, South Pacific. Cook's Bay.
Reef octopus, Octopus cyanea, eye and siphon detail, Rongelap, Marshall Islands, Micronesia
Emperor shrimp, Periclimenes imperator, next to gills of spanish dancer, Hexabranchus sanguineus, night, Puerto Galera, Mindoro, Philippines.
Over under image of coral reef, Acropora spp., and trees at Majikin Island, Namu atoll, Marshall Islands (N. Pacific).
Broadband cuttlefish, Sepia latimanus, in sandy bottom, Gato Island, Cebu, Philippines.
Piranha (Pygocentrus nattereri), a carnivorous fish, caught on a line, southern Pantanal, Mato Grosso do Sul, Brazil
Green sea turtles hatching, Chelonia mydas, Fernando de Noronha, Pernambuco, Brazil.
Wave breaking over shallow coral reef, Ailuk atoll, Marshall Islands, Pacific
Thousands of scalefin anthias, Pseudanthias squamipinnis, hover over corals and barrel sponge, Puerto Galera, Mindoro, Philippines.
Pink hydrocoral (lace coral), Stylaster sp., Namu atoll, Marshall Islands (N. Pacific).
Pleurobranch sidegill slug, Berthella martensi, mantle detail, Puerto Galera, Mindoro, Philippines.
Polycerid nudibranch, Nembrotha cristata, external gill detail, Puerto Galera, Mindoro, Philippines..
Hawaiian reef lobster, endemic, Enoplometopus occidentalis, Portlock, Oahu, Hawaii (N. Pacific)
Common lionfish, Pterois volitans, blends in with a variety of soft corals and sponges, Cars, Dumaguete, Negros Island, Philippines.
Split image of lush vegetation and free diver observing lettuce coral, Turbinaria reniformis, next to cave entrance, Palau, Micronesia.
Dorid nudibranch, Glossodoris averni, La Laguna, Puerto Galera, Mindoro, Philippines.
Over under of banca and sandy seafloor, Apo island Marine Reserve, Philippines.
Coral reef, Namu atoll, Marshall Islands (N. Pacific).
Island of Taha'a, French Polynesia. A tourist girl do dive at the Motu Mahana, Taha'a, Society Islands, French Polynesia, South Pacific.
Hermit crab, Coenobita perlatus, Bird I., Mili, Marshall Islands (N. Pacific).
Emperor angelfish, Pomacanthus imperator, Namu atoll, Marshall Islands (N. Pacific).
Over under image of coral reef, Acropora spp., and trees at Majikin Island, Namu atoll, Marshall Islands (N. Pacific).
Bottlenose dolphin, Tursiops truncatus, Oahu, Hawaii (N. Pacific).
Ornamental crab, Schizophrys aspera, Palau, Micronesia.
Decorator spider crab, Cyclocoeloma tuberculata, Dumaguete, Negros, Philippines.
Brown algae, Sargassum horneri and Undaria pinnatifida, Chusan, Ulleungdo, South Korea (East Sea or Sea of Japan).
Anemone shrimp, Periclimenes brevicarpalis, El Dorado reef, Dumaguete, Negros Island, Philippines.
Blackspotted puffer fish, Arothron nigropunctatus, Dumaguete, Negros, Philippines, Visayan sea.
Sting rays in the shallow waters of the Bora Bora lagoon, Moorea, French Polynesia, Society Islands, South Pacific. Cook's Bay.
Family of false clown anemone fish, Amphiprion ocellaris, seeking refuge in sea anemone, Masaplod, Dumaguete, Negros Island, Philippines.
Aggregation of pyramid butterflyfish, Hemitaurichthys polylepis, Siaes drop-off, Palau, Micronesia.