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Detail of a reef-building coral colony, Favia sp., growing on a healthy reef in Komodo National Park, Indonesia.
A Nembrotha cristata nudibranch crawls over a tunicate.
Crinoids and soft corals cover this reef in Raja Ampat, Indonesia.
Sea lions play among the baitfish under the California Oil Rigs, Southern California.
A green sea turtle swims by a reef under the sun, North Sulawesi, Indonesia.
A black manta ray, Mobula alfredi, visits a cleaning station on a reef in Komodo National Park, Indonesia.
A beautiful coral reef thrives in shallow water in Indonesia's Banda Sea.
A humpback whale and her calf play near the surface.
A white crab holds its eggs under its carapace until they hatch, Tulamben, Bali, Indonesia.
A tiny white hairy frogfish, Anilao, Philippines.
A stargazer hides under the sand waiting to ambush its prey, Anilao, Philippines.
A silky shark swims against a school of black jacks, Socorro Island, Mexico.
Pacific octopus off the coast of California.
A cuttlefish hunts at night, Anilao, Philippines.
Pelagic planktonic shrimp, Anilao, Philippines.
A juvenile broadclub cuttlefish about the size of a human thumb, Anilao, Philippines.
A hawksbill turtle glides through the water on a sunny day.
A titan triggerfish aggressively defends it's nest of eggs in the sand.
Head-on view of a giant jawfish in the Sea of Cortez.
A finespotted jawfish surrounded by starfish.
A pair of cuttlefish mating over a coral reef, Raja Ampat, Indonesia.
A school of fish with a few stragglers catching up to the school, Raja Ampat, Indonesia.
A longarm octopus flashes its colors at night, Anilao, Philippines.
A Doriprismatica nudibranch face on portrait, Anilao, Philippines.
A colorful tiger shrimp ventures from its home under rubble for only a few seconds, Anilao, Philippines.
Cyerce elegans is one of the beautiful butterfly nudibranchs found in the Philippines, Anilao, Philippines.
Marbled grouper from the French Polynesian Islands gather in the South Pass of Fakarava to spawn just once a year, French Polynesia.
A hawksbill sea turtle glides over the ocean floor, Maldives.
A trio of rays swim down a sandy gulch in the Indian Ocean, Maldives.
An oceanic whitetip shark soars through the water, Red Sea.
A pod of spinner dolphins plays near the surface of Red Sea.
Several pink anemones cluster on top of a coral outcropping providing homes for several anemone fish, Maldives.
A coral bommie full of life, Maldives.
A titan triggerfish hovers in a cleaning station, Red Sea.
A green sea turtle pauses from eating sea grass to gaze up at its surroundings, Red Sea.
Three male Indo-Pacific bottlenose dolphins (Tursiops aduncus), and one female dolphin breeding, Red Sea.
Goat herder at Bagan (Pagan), Myanmar (Burma), Asia
Hartmann's mountain zebra, (Equus zebra hartmannae), Kunene region, Namibia, Africa
Dancing white lady spider (Leucorchestris arenicola), Namib Desert, Namibia, Africa
Male Atlantic walrus (Odobenus rosmarus rosmarus) hauled out to molt at Kapp Lee, Edgeoya, Svalbard, Norway, Scandinavia, Europe
Close up of an elephant's eye, Pinnawala Elephant Orphanage, Sri Lanka, Asia
Elephant at Pinnawala Elephant Orphanage, Sri Lanka, Asia
Several intermediate and one adult longfin spadefish (Platax teira) swimming in the Maldives.
A longspine grouper (Epinephelus longispinis) being cleaned by a cleaner wrasse (Labroides dimidiatus).
Humpback whale (Megaptera novaeangliae) calf playing at the surface.
Two oceanic manta rays (Mobula birostris) coming in to a cleaning station, Maldives.
Glossodoris nudibranch, Anilao, Philippines.
Denise's pygmy seahorse (Hippocampus denise), Kimbe Bay, Papua New Guinea.
Common ghost goby (Pleurosicya mossambica), Kimbe Bay, Papua New Guinea.
A juvenile ornate ghost pipefish (Solenostomus paradoxus).
Caloria nudibranch, Milne Bay, Papua New Guinea.
An oceanic manta ray feeding in Isla Mujeres, Mexico.
Southern stingray on the sandbar in Grand Cayman, Cayman Islands.
Christmas tree worm in Raja Ampat, Indonesia.
Whale Shark, La Paz, Mexico.
Sea lion blowing bubbles, Los Islotes, La Paz, Mexico.
Sea fan on soft coral in Raja Ampat, Indonesia.
Soft coral in Raja Ampat, Indonesia.
Pair of Lionfish, Indonesia.
Arrow crab on a sea fan, Belize.
Cuttlefish, Indonesia.
Magnificent frigatebird (Fregata magnificens), breeding colony in Bahia Gabriel, Isla del Espiritu Santo, BCS, Mexico, North America
Adult polar bear (Ursus maritimus) on first year sea ice near Cape Fanshawe, Spitsbergen, Svalbard, Arctic, Norway, Scandinavia, Europe
Adult glaucous gull (Larus hyperboreus) with bird kill at Bjornoya, Bear Island, Norway, Scandinavia, Europe
A mahi mahi fish (Coryphaena hippurus) at Cat Island in the Bahamas.
A bioluminescent tunicate, Catalina Island, California.
Giraffe behind a tree on the Maasai Mara, Kenya, East Africa, Africa
Batfishes swimming around a shipwreck in Anilao, Philippines.
Batfishes swimming around a shipwreck in Anilao, Philippines.
A Crown Jellyfish (Netrostoma setouchina) gently floating through South Pacific ocean waters off the coast of Tavarua Island, Fiji.
A Crown Jellyfish (Netrostoma setouchina) gently floating through South Pacific ocean waters off the coast of Tavarua Island, Fiji.
Close-up of a bicolor damselfish (Stegastes partitus) as it swims up from the coral reef off the coast of Key Largo, Florida.
A Hi Utsuri koi fish swims over the rocky bottom of the clear freshwater of Vortex Spring shoreline in Ponce De Leon, Florida.
A Spotted Trunkfish (Lactophrys bilcaudalis) swims over an algae covered coral reef in the Atlantic Ocean off the coast of Key Largo, Florida.
A Rainbow Parrotfish (Scarus guacamaia) pokes it's head out from a hole in the coral reef in the Atlantic Ocean off the coast of Key Largo, Florida.
A Neon Goby (Gobiosoma oceanops) takes a look outside its hole in the live boulder star coral (Montastraea annularis), Key Largo, Florida.
Remora's suck the the hull of a shipwreck, Beqa Lagoon, Fiji.
Spotted grouper, Beqa Lagoon, Fiji.
A small Ambon chromis (Chromis amboinensis) swimming amongst coral in Beqa Lagoon, Fiji.
Close-up of a sea star, Beqa Lagoon Fiji.
Freakled hawkfish (Paracirrhites forsteri) sits on some Acropora coral on a Fijian reef.
A large common lionfish (Pterois volitans) swimming at Beqa Lagoon, Fiji.
Scalefin anthias fish (Pseudanthias squamipinnis) Beqa Lagoon, Fiji.
Scalefin anthias fish (Pseudanthias squamipinnis) Beqa Lagoon, Fiji.
Damselfish, Beqa Lagoon, Fiji.
A pair of Moorish idols (Zanclus cornutus) dart for cover when divers approach, Beqa Lagoon, Fiji.
Close-up of a popcorn shrmp (Periclimenes brevicarpalis) on an anenome on a Fijian Reef.
Nudibranch feeding on algae, Papua New Guinea.
Nudibranch feeding on algae, Papua New Guinea.
Beautiful nudibranch on coral, Papua New Guinea.
False Ocellaris Clownfish in its host anemone, Papua New Guinea.
Nudibranch feeding on algae, Papua New Guinea.
A large silvertip shark comes in close to look at the photographer, Fiji.
A large 10 foot Tiger Shark swims into the feeding zone, Fiji.
A large 10 foot Tiger Shark swims into the feeding zone, Fiji.
A large 10 foot Tiger Shark swims into the feeding zone, Fiji.
Tawny Nurse Shark swims away after eating some fish scraps, Fiji.
Cinnamon Clownfish (Amphiprion melanopus) in its host anemone.
Hawksbill turtle glides over the pristine reefs in Fiji.
Huge bull shark with mouth open, Fiji.