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A larval lionfish floats in the open ocean as plankton, Anilao, Philippines.
A sea spider hunts in coral polyps for its dinner, Anilao, Philippines.
A tiny hard coral crab can be found burrowing in between the polyps of the coral, Anilao, Philippines.
A snail about the size of a coin generally lives under the sand but comes out at night to feed, Anilao, Philippines.
Blacktip reef sharks patrol the shallow waters around a small island in Tahiti, French Polynesia.
A honeycomb eel emerges from its den and appears to smile, Maldives.
Antarctic tern (Sterna vittata), feeding in the Enterprise Islands, Antarctica, Southern Ocean, Polar Regions
Views of the wreck of the Guvernoren, a 20th century whale processing ship, in the Enterprise Islands, Antarctica, Polar Regions
A large pod of Gerlache Strait type B killer whales (Orcinus orca), traveling and socializing in Gerlache Strait, Antarctica, Polar Regions
An adult bull killer whale (Orcinus orca) surfacing in Johnstone Strait, British Columbia, Canada, Pacific Ocean, North America
A pod of killer whales (Orcinus orca) surfacing in Chatham Strait, Southeast Alaska, United States of America, Pacific Ocean, North America
A view of a nuclear powered submarine in the industrial and militarized Russian seaport city of Murmansk, Murmansk Oblast, Russia, Arctic, Europe
Curious walrus (Odobenus rosmarus rosmarus) near Apollo Island in Franz Josef Land, Russia, Arctic Ocean, Eurasia
Curious walrus (Odobenus rosmarus rosmarus) near Apollo Island in Franz Josef Land, Russia, Arctic Ocean, Eurasia
Sea anemone, Bohol Sea, Philippines.
Eye close-up on a crocodile flathead, New Ireland, Papua New Guinea.
Spotted porcelain crab, New Ireland, Papua New Guinea.
Underwater mermaid statue at Grand Cayman island.
Brittle Star on sponge, Belize.
Extreme close-up showing the detail of Mushroom coral, Indonesia
Male great white shark, Guadalupe Island, Mexico.
Underwater clownfish in anemone at Pulau Setaih Island, Natuna Archipelago, Indonesia, Southeast Asia, Asia
California sea lion (Zalophus californianus), with snorkeler at Los Islotes, Baja California Sur, Mexico, North America
California sea lion (Zalophus californianus), with photographer at Los Islotes, Baja California Sur, Mexico, North America
Curious adult bull walrus (Odobenus rosmarus rosmarus) approach the ship at Moffen Island in the Svalbard Archipelago, Norway, Arctic, Europe
California sea lion (Zalophus californianus), with photographer at Los Islotes, Baja California Sur, Mexico, North America
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) feeding underwater in the Galapagos, 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
Spotted eagle ray (Aetobatus narinari) underwater at Leon Dormido Island off San Cristobal Island, Galapagos, UNESCO World Heritage Site, Ecuador, South America
Adult green sea turtle (Chelonia mydas agassizii) underwater in the Galapagos Island Archipelago, UNESCO World Heritage Site, Ecuador, South America
California sea lion (Zalophus californianus), with snorkeler at Los Islotes, Baja California Sur, Mexico, North America
Galapagos penguin (Spheniscus mendiculus) feeding underwater on small baitfish in the Galapagos Islands, UNESCO World Heritage Site, Ecuador, South America
Galapagos sea lion pup (Zalophus wollebaeki) underwater playing with a lobster molt in the Galapagos Islands, UNESCO World Heritage Site, Ecuador, South America
Young Galapagos sea lion (Zalophus wollebaeki) at play underwater in the Galapagos Island Archipelago, UNESCO World Heritage Site, Ecuador, South America
Young Galapagos sea lions (Zalophus wollebaeki) at play underwater in the Galapagos Island Archipelago, UNESCO World Heritage Site, Ecuador, South America
Young Galapagos sea lions (Zalophus wollebaeki) at play underwater in the Galapagos Island Archipelago, UNESCO World Heritage Site, Ecuador, South America
Young Galapagos sea lions (Zalophus wollebaeki) at play underwater in the Galapagos Island Archipelago, UNESCO World Heritage Site, Ecuador, South America
Young Galapagos sea lions (Zalophus wollebaeki) at play underwater in the Galapagos Island Archipelago, UNESCO World Heritage Site, Ecuador, South America
Half above and half below view of coral reef at Pulau Setaih Island, Natuna Archipelago, Indonesia, Southeast Asia, Asia
Snorkeler in underwater profusion of hard plate corals at Pulau Setaih Island, Natuna Archipelago, Indonesia, Southeast Asia, Asia
A myriad of hard and soft corals at Vatu-I-Ra Conservation Park on Viti Levu, Fiji, South Pacific, Pacific
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
A myriad of hard and soft corals at Vatu-I-Ra Conservation Park on Viti Levu, Fiji, South Pacific, Pacific
A myriad of hard and soft corals at Vatu-I-Ra Conservation Park on Viti Levu, Fiji, South Pacific, Pacific
Diving and snorkling area, Punta Perdiz near Playa Giron, Bay of Pigs, Matanzas Province, Cuba, West Indies, Caribbean, Central America
Looking down into the Los Peces fresh water cave near Playa Giron, Matanzas Province, Cuba, West Indies, Caribbean, Central America
Adult fin whale (Balaenoptera physalus) surfacing in the rich waters off the continental shelf near South Georgia in the Southern Ocean, Polar Regions
Moon jellyfish (Aurelia aurita), Aquarium of San Sebastian, Bay of Biscay, province of Gipuzkoa, Basque Country, Spain, Europe
Close-up of a spiny lobster, Caribbean Sea, Central America
A small pod of Type B killer whales (Orcinus nanus) just outside Duse Bay in the Weddell Sea, Antarctica, Polar Regions
Patterns in the kelp at low tide on South Georgia Island, Southern Ocean
Purple stove-pipe sponge (Aplysina archeri), with boat in background, Curacao.
A red, white and yellow Christmas tree worm (Spirobranchus giganteus), on coral, Curacao.
Goldentail moray eel (Gymnothorax miliaris), in coral reef, Curacao.
Chain moray eel (Echidna catenata), in coral reef, Curacao.
A green sea turtle (Chelonia mydas) in the sea grass, Saint Croix, U.S. Virgin Islands.
The shell of a green sea turtle (Chelonia mydas) swimming to the surface, Saint Croix, U.S. Virgin Islands.
The face of a green sea turtle (Chelonia mydas), Saint Croix, U.S. Virgin Islands.
Headshot of a seaweed blenny (Parablennius marmoreus).
Christmas tree worms (Spirobranchus giganteus) on brain coral, Saint Croix, U.S. Virgin Islands.
Head of a goldentail moray eel (Gymnothorax miliaris).
Lined seahorse (Hippocampus erectus).
Comb jelly in blackwater dive at night, West Palm Beach, Florida.
Tiger shark swimming over sand, Tiger Beach, Bahamas.
Green sea turtle with remora on back, Tiger Beach, Bahamas.
Great hammerhead shark turning, Tiger Beach, Bahamas.
Grean sea turtle with reflection in surface, Tiger Beach, Bahamas.
Green sea turtle swimming on the ocean floor, Tiger Beach, Bahamas.
Garibaldi fish on black background, Tiger Beach, Bahamas.
Great hammerhead shark and tiger shark, Tiger Beach, Bahamas.
Great hammerhead shark, Tiger Beach, Bahamas.
Front view of a tiger shark, Tiger Beach, Bahamas.
Reef shark, Tiger Beach, Bahamas.
Front view of a tiger shark, Tiger Beach, Bahamas.
Scuba divers interacting with a pair of tiger sharks, Tiger Beach, Bahamas.
Great hammerhead shark with mouth open, Tiger Beach, Bahamas.
Two sheephead (Semicossyphus pulcher) In a kelp forest, Catalina Island, California.
A Caribbean reef squid on a deepwater night dive in West Palm Beach, Florida.
A starfish with spiny sea urchins at Quadra Island, British Columbia in Canada.
Great hammerhead shark with mouth open, Tiger Beach, Bahamas.
A Caribbean reef squid on a deepwater night dive in West Palm Beach, Florida.
An oceanic whitetip shark (C. longimanus) and surface reflections at Cat Island in the Bahamas.
A boat captain watches an oceanic whitetip shark below at Cat Island in the Bahamas.
A giant oceanic manta ray (Mobula birostris) with attached remoras at San Benedicto island in Mexico.
A hawksbill sea turtle (Eretmochelys imbricata) feeds on sponge and an angelfish follows for scraps in Cozumel, Mexico.
A ribbon eel (Rhinomuraena quaesita) in Indonesia.
A Caribbean reef shark (Carcharhinus perezi) in the Turks and Caicos.
A mahi mahi fish (Coryphaena hippurus) at Cat Island in the Bahamas.
A large orange frogfish at Cocos Island in Costa Rica.
A reef manta ray (Mobula alfredi) feeding at night in Hawaii.
A scalloped hammerhead shark (Sphyrna lewini) at Socorros Island in Mexico.
A diver shines a light in on a cavern filled with glassy sweepers (Pempheris schomburgkii) at Molasses Reef in Key Largo, Florida.
Two squat anemone shrimp (Thor amboinensis) in Curacao.
A diver has a close encounter with an oceanic whitetip shark (Carcharhinus longimanus) at Cat Island in the Bahamas.
Golden cuttlefish, Lembeh Strait, Indonesia.
Arrow Crab close-up, West Palm Beach, Florida.
A pair of Christmas tree worms in Cozumel, Mexico.
Snowflake moray eel (Echidna nebulosa) in Costa Rica.
Snowflake moray eel (Echidna nebulosa) in Costa Rica.