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Pair of lionfish, Indonesia.
Extreme close-up showing the detail of Mushroom coral, Indonesia
Cuttlefish, Indonesia.
Male great white shark, Guadalupe Island, Mexico.
Schooling king angelfish (Holacanthus passer), underwater 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
Spotted eagle rays (Aetobatus narinari) underwater at Leon Dormido Island off San Cristobal Island, Galapagos, UNESCO World Heritage Site, Ecuador, South America
A myriad of hard and soft corals, as well as tropical reef fish at Vatu-I-Ra Conservation Park on Viti Levu, Fiji, South Pacific, Pacific
Guadalupe fur seals (Arctocephalus townsendi), underwater on Las Animas Island, Baja California Sur, Sea of Cortez, Mexico, North America
A Choriaster species starfish does a 'hand-stand', on a coral reef in Gaafu Dhaalu atoll, Maldives
A shoal of tiny fish swimming over a coral reef in the Gaafu Dhaalu atoll, Maldives
A mixture of Acropora species scleractinic hard corals, on a coral reef in Gaafu Dhaalu atoll, Maldives
A mixture of Acropora species scleractinic hard corals, on a coral reef in Gaafu Dhaalu atoll, Maldives
A huge Echinogorgia species sea fan, more than two metres across, on a coral reef in Gaafu Dhaalu atoll, Maldives
Staghorn scleractinic hard corals (Acropora species), on a coral reef in Gaafu Dhaalu atoll, Maldives
Mushroon Leather Coral (Sarcophyton species), a soft coral, growing on a coral reef in Gaafu Dhaalu atoll, Maldives
Acropora species 'plate' corals, growing on a coral reef in Gaafu Dhaalu atoll, Maldives
Acropora species scleractinic hard corals, showing some bleaching, growing on a coral reef in Gaafu Dhaalu atoll, Maldives
A shoal of small fish swimming over Acropora species hard corals, on a coral reef in Gaafu Dhaalu atoll, Maldives
Guadalupe fur seal (Arctocephalus townsendi), at new haul out on Las Animas Island, Baja California Sur, Sea of Cortez, Mexico, North America
Adult Weddell seal (Leptonychotes weddellii) hauled out on ice near the Antarctic Peninsula, Southern Ocean, Polar Regions
Humpback whale (Megaptera novaeangliae) surfacing in the Weddell Sea near the Antarctic Peninsula, Antarctica, Polar Regions
Guadalupe fur seal (Arctocephalus townsendi), underwater on Las Animas Island, Baja California Sur, Sea of Cortez, Mexico, North America
Adult California gray whale (Eschrictius robustus), near boat in San Ignacio Lagoon, Baja California, Mexico, North America
Underwater scenes from the Galapagos Island Archipelago, UNESCO World Heritage Site, Ecuador, South America
Galapagos sea lion (Zalophus wollebaeki) underwater in the Galapagos Island Archipelago, UNESCO World Heritage Site, Ecuador, South America
Galapagos sea lion (Zalophus wollebaeki) underwater in the Galapagos Island Archipelago, UNESCO World Heritage Site, Ecuador, South America
Head of a goldentail moray eel (Gymnothorax miliaris).
A Caribbean reef squid on a deepwater night dive in West Palm Beach, Florida.
A diver shines a light in on a cavern filled with glassy sweepers (Pempheris schomburgkii) at Molasses Reef in Key Largo, Florida.
Snowflake moray eel (Echidna nebulosa) in Costa Rica.
Oceanic whitetip shark circling a boat off Cat Island, Bahamas.
Diving with oceanic whitetip sharks, Cat Island, Bahamas.
Scuba diver swimming over a massive school of jack fish in Cabo Pulmo, Mexico
Playful remora's, Tarpon Tunnels, Grand Cayman.
School of silversides form shapes in the tunnels at Eden Rock, Grand Cayman.
Batfishes swimming around a shipwreck in Anilao, Philippines.
Soft coral in the reef at Komodo, Indonesia.
Soft coral in the reef at Komodo, Indonesia.
Snorkeler exploring starfish in lagoon in Tioman Island, Malaysia.
A scuba diver swims through an underwater field of tape grass leading away from the Blue Springs cave in Merritts Mill Pond in Marianna, Florida.
A Crown Jellyfish (Netrostoma setouchina) gently floating through South Pacific ocean waters off the coast of Tavarua Island, Fiji.
Dwarf hawkfish, Fiji.
Gymnodoris ceylonica nudibranch, Beqa Lagoon, Fiji.
Scuba diver and silvertip shark (Carcharhinus albimarginatus) at The Bistro Dive site in Fiji.
A large red gorgonian sea fan and large tiger cowrie (Cypraea tigrisis), Beqa Lagoon, Fiji.
Chromodoris kuniei nudibranch, Beqa Lagoon, Fiji.
Yellow criniod feather star balled up on the reefs edge in Fiji.
Orange-fin anemonefish (Amphiprion chrysopterus) in its host anenome, Fiji.
False Ocellaris Clownfish in its host anemone, Papua New Guinea.
Crab-eyed Goby displaying its colorful fins, Papua New Guinea.
Beautiful nudibranch on coral, Papua New Guinea.
A large 10 foot Tiger Shark swims into the feeding zone, Fiji.
Sunburst above a diver amongst the reefs in Fiji.
Diver swims through the shallow reef towards shore, Bonaire, Caribbean Netherlands.
The face of a Spotted Scorpionfish, Bonaire, Caribbean Netherlands.
Sharknose Goby sits on some hard coral, Bonaire, Caribbean Netherlands.
Longlure Frogfish yawning, Bonaire, Caribbean Netherlands.
Colorful Queen Angelfish, Bonaire, Caribbean Netherlands.
A Secretary Blenny looks out from its coral home, Bonaire, Caribbean Netherlands.
Yellow-Ridged Ceratosoma (Ceratosoma flavicostatum) nudibranch, head on view, Komodo National Park, Indonesia.
Masked butterflyfish, Red Sea, Egypt.
Head-on portrait of purple anthias (Pseudanthias tuka) in black water, Manado, North Sulawesi, Indonesia.
Bumphead parrotfish (Bolbometopon muricatum) swimming over the Liberty Wreck in Tulamben, Bali, Indonesia.
Pair of orange and red christmas tree worms on top of yellow hard coral, Pulau Aur, Johor, Malaysia.
Whole family of black, white and yellow clownfish in dark grey anemone, Komodo, Indonesia.
Green sea turtle (Chelonia mydas) resting on a plate coral, North Sulawesi, Indonesia.
Giant moray eel and cleaner wrasse, Ari and Male Atoll, Maldives
Sea snail on black background, Sisimiut, Greenland
Octopus on reef, Koh Bon, Similan Islands, Thailand.
Anemonefish, Bondok, Farasan Banks, Mar Mar Island north, Saudi Arabia.
Cavern divers enter cenote system in Mexico's Yucatan Peninsula.
Hawksbill Sea Turtle in mid-water in the Caribbean Sea.
Bigeye Trevally (Caranx sexfasciatus), schooling in Cabo Pulmo National Marine Park, Baja California Sur, Mexico, North America
Hawksbill sea turtle (Eretmochelys imbricata), eating fisherman scraps, Curacao.
Bigeye Trevally (Caranx sexfasciatus), schooling in Cabo Pulmo National Marine Park, Baja California Sur, Mexico, North America
Coral Reefs Monument at the waterfront of San Miguel de Cozumel, Cozumel Island, Quintana Roo State, Mexico
Coral Reefs Monument at the waterfront of San Miguel de Cozumel, Cozumel Island, Quintana Roo State, Mexico
Coral Reefs Monument at the waterfront of San Miguel de Cozumel, Cozumel Island, Quintana Roo State, Mexico
Stingray seen during Palancar Gardens, El Cielito and Colombia Deep Reef Snorkelling Tour, Cozumel Island, Quintana Roo State, Mexico
Shipwreck Restaurant Ruins at the entrance to the Pirate Canal, Bacalar Lagoon, Bacalar, Quintana Roo State, Mexico
Half above and half below on a remote small Islet in the Badas Island Group off Borneo, Indonesia, Southeast Asia, Asia
Humpback whale (Megaptera novaeangliae), surfacing off San Jose del Cabo, Baja California Sur, Mexico, North America
California sea lions (Zalophus californianus), in the water in Puerto Refugio, Baja California, Sea of Cortez, Mexico, North America
A long-beaked common dolphin (Delphinus capensis), surfacing off Gorda Banks, Baja California Sur, Mexico, North America
Humpback whales (Megaptera novaeangliae), near tourist boat off San Jose del Cabo, Baja California Sur, Mexico, North America
Underwater marine life on coral reefs, Thailand
Underwater marine life on coral reefs, Thailand
Patterns in the kelp at low tide on New Island in the Falkland Islands
A pod of Pacific white-sided dolphins (Lagenorhynchus obliquidens) leaping and surfacing in Johnstone Strait, British Columbia, Canada, North America
A pod of Pacific white-sided dolphins (Lagenorhynchus obliquidens) leaping and surfacing in Johnstone Strait, British Columbia, Canada, North America
Underwater view of the reef along the circumference of the Great Blue Hole on Lighthouse Reef, UNESCO, Belize
Green sea turtle (Chelonia mydas), feeding on the sand 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 California sea lion (Zalophus californianus) bull underwater at Los Islotes, Baja California Sur, Mexico, North America
Adult California sea lion (Zalophus californianus) underwater at Los Islotes, Baja California Sur, Mexico, North America
Adult humpback whale (Megaptera novaeangliae), breaching in the fjord of Isfjardardjup, Iceland
Group of at least eight killer whales (Orcinus orca) surfacing off the coast of the island of Surtsey, southern Iceland
A large school of convict tang (Acanthurus triostegus) on the only living reef in the Sea of Cortez, Cabo Pulmo, Baja California Sur, Mexico, North America
Hard and soft corals and reef fish underwater on Sebayur Island, Komodo Island National Park, Indonesia, Southeast Asia, Asia