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A marble starfish (elegant starfish) (Fromia elegans), on hard coral, Fiji, South Pacific, Pacific
A white-v hydroid crab (Hyastenus borradailei), feeding on a colony of green tube coral, Fiji, South Pacific, Pacific
Yellow (Tubastrea faulkneri) coral polyps, Southern Thailand, Andaman Sea, Indian Ocean, Asia
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 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.
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.
Detail of the texture on a mushroom coral (Fungia sp.) growing in Wakatobi National Park, Indonesia. This remote region is known for its incredible marine biodiversity and gorgeous reefs.
Detail of a coral colony in Raja Ampat, Indonesia. This remote, tropical region is home to extraordinary marine biodiversity.
Detail of a mushroom coral (Fungia sp.) on a reef in Raja Ampat, Indonesia. This remote, tropical region is home to extraordinary marine biodiversity.
Beautiful soft corals (Dendronephthya sp.) grow on the edge of a channel in Raja Ampat, Indonesia.
A beautiful coral reef grows near an island in the Banda Sea, Indonesia.
A beautiful coral reef grows near an island in the Banda Sea, Indonesia. This remote and historic region, known previously for the Spice Islands, harbors extraordinary marine biodiversity.
Abstract of the mouth of a Trachyphyllia coral growing in Lembeh Strait, Indonesia.
Detail of an anchor coral (Euphyllia ancora) growing in Lembeh Strait, Indonesia.
A crown of thorns starfish (Acanthaster planci) feeds on a coral reef growing near an island in the Banda Sea, Indonesia.
Detail of the mouth on a mushroom coral (Fungia sp.) in Lembeh Strait, Indonesia.
A beautiful soft coral colony, Dendronephthya sp., grows amid the remote, tropical islands of Raja Ampat, Indonesia.
Detail of coral polyps growing on a healthy reef in Raja Ampat, Indonesia.
Detail of coral polyps, Tubastrea sp., growing on a healthy reef in Raja Ampat, Indonesia.
A false clownfish, Amphiprion ocellaris, swims among the tentacles of its host anemone in Raja Ampat, Indonesia.
A bright cup coral, Tubastrea sp., grows on a remote reef in Raja Ampat, Indonesia.
A magnificent sea anemone, Heteractis magnifica, grows on a reef in Komodo National Park, Indonesia. This tropical area in the Lesser Sunda Islands is known for both its amazing marine biodiversity as well its infamous dragons.
Detail of a bulbed anemone, Entacmaea quadricolor, on a coral reef in Komodo National Park, Indonesia.
Detail of a reef-building coral colony, Favia sp., growing on a healthy reef in Komodo National Park, Indonesia.
Detail of a reef-building coral colony growing on a healthy reef in Komodo National Park, Indonesia.
A sea spider hunts in coral polyps for its dinner, Anilao, Philippines.
Shrimp on bubble coral, Indonesia.
Clown Anemonefish, Indonesia.
Detail of anchor coral tentacles (Euphyllia sp.) growing on a reef in Indonesia. This area is known for its high marine biodiversity.
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.
Detail of the polyps of a Goniopora coral growing in Lembeh Strait, Indonesia.
Beautiful coral polyps grow close together in a vibrant colony amid the tropical islands of Raja Ampat, Indonesia.
Detail of a reef-building coral colony, Favia sp., growing on a healthy reef in Komodo National Park, Indonesia.
Clownfish in green anemone, Indonesia.
Black Anemonefish, Fiji.
Clownfish in purple tip anemone, Australia.
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.
Detail of a stony coral (Galaxea sp.) growing in Wakatobi National Park, Indonesia. This remote region is known for its incredible marine biodiversity and gorgeous reefs.
Soft corals grow on the edge of a beautiful reef in the historic Banda Islands of eastern Indonesia.
The seafloor in a mangrove forest is covered by soft leather corals in Raja Ampat, Indonesia.
Detail of a fluorescing coral colony growing on a shallow reef in Raja Ampat, Indonesia.
A beautiful coral reef grows near an island in the Banda Sea, Indonesia. This remote and historic region, known previously for the Spice Islands, harbors extraordinary marine biodiversity.
A small, colorful goby sits on a coral colony amid the remote, tropical islands of Raja Ampat, Indonesia.
A tiny hard coral crab can be found burrowing in between the polyps of the coral, Anilao, Philippines.
Coral on the Great Barrier Reef, off Cairns, Queensland, Australia, Pacific
Leather coral (Sarcophytum sp.), polyp detail, Namu atoll, Marshall Islands, Pacific
Solitary Hydroid (Tubularia indivisa), very clear view of single polyp head with black background, St Abbs, Scotland, UK North Sea
Unidentified octocoral species polyps. Buyat Bay, North Sulawesi, Indonesia, Pacific Ocean.
Coral polyps bleaching, Favia sp. Bleaching occurs when corals stress under high water temperatures and expel their symbiotic zooxanthellae. The coral will starve to death if it does not reacquire zooxanthellae. Buyat Bay, North Sulawesi, Indonesia, Pacific Ocean.
Coral polyps, Favites sp. Lembeh Strait, North Sulawesi, Indonesia, Pacific Ocean.
Hard Coral polyps, Microneisa
Tiny Red Goby (Pleurosicya sp) Two resting on coral.
Mabul Island, Borneo, Malaysia
(RR)
Bell hydroid (Tubularia larynx) large group of individuals tightly packed togethe clearly showing polyp heads, St Abbs, Scotland, UK North Sea
Giant clam amongst the soft coral on the Great Barrier Reef, off Cairns, Queensland, Australia, Pacific
Lettuce coral (Turbinaria reniformis), Jaboan, Rongelap, Marshall Islands, Micronesia, Pacific
Solitary Hydroid (Tubularia indivisa), very clear view of single polyp head with black background, St Abbs, Scotland, UK North Sea
Coral on the Great Barrier Reef, off Cairns, Queensland, Australia, Pacific
Dead and broken coral on the sea bed, Great Barrier Reef, off Cairns, Queensland, Australia, Pacific
Dead Mens Finger (Alcyonium digitatum), detail of polyp, Eyemouth, Scotland, UK North Sea
Coral on the Great Barrier Reef, off Cairns, Queensland, Australia, Pacific
Solitary Hydroid (Ralpharia gorgoniae) clear view of single hydroid polyp, Little Cayman Island, Cayman Islands, Caribbean
Coral on the Great Barrier Reef, off Cairns, Queensland, Australia, Pacific
Mushroom coral, Ctenactis sp., night, Dumaguete, Negros Island, Philippines.
Pair of wire coral gobies, Bryaninops yongei, on wire coral, Cirripathes anguina,Ailuk atoll, Marshall Islands, Pacific
Underwater close up view of open coral polyp during a dive, Cancun, Quintana Roo, Mexico
Cabbage Coral, Fiji
Lobed Cactus Coral
Lobed Cactus Coral
Cauliflower Coral
Red Soft Coral with tentacles withdrawn
Table Coral
Coral reef scene
Acropora Coral
Polyps of a mushroom coral (Fungiidae) Pacific, Great Barrier Reef, UNESCO World Heritage, Australia, Oceania
Open coral polyps on the trunk of a soft coral (Dendronephthya), coral, Pacific, Great Barrier Reef, UNESCO World Heritage, Australia, Oceania
Colony of coral polyps in brain corallae (Physogyra lichtensteini), Pacific, Great Barrier Reef, UNESCO World Heritage Site, Australia, Oceania
Soft coral, leather coral (Lobophytum) with semi-enclosed polyps, detail, Pacific, Great Barrier Reef, UNESCO World Heritage, Australia, Oceania
Open coral polyps on Mopsella sea fan (Mopsella) Pacific, Great Barrier Reef, UNESCO World Natural Heritage, Australia, Oceania
Lesser Valley Coral (Favia), detail with retracted polyps, Red Sea, Aqaba, Kingdom of Jordan
Stone coral (Favia favus), detail with indented polyps, Red Sea, Aqaba, Kingdom of Jordan
Large-pored stony coral (Coeloseris mayeri) with indented polyps, Red Sea, Aqaba, Kingdom of Jordan
Close-up of Polyp Corals underwater, Sipadan, Malaysia
A close look at the detail of Brain coral (Platygyra sinensis) during the day with the its polyps closed, Yap, Federated States of Micronesia
This hard coral colony in the Pacific has begun to bleach, expelling its symbiotic zooxanthellae, consequences of global climate change and climate warming, Yap, Micronesia
Mouth detail of a colourful and healthy Mushroom coral, Fungia fungites, that is growing on a tropical coral reef in the Philippines. Mushroom coral is unique in the coral world, in that it does not attach itself to the bottom, Philippines
This soft coral crab or candy crab (Hoplophrys oatesii), is wearing a decoration of soft coral polyps on top of head as camouflage, Dumaguete, Philippines
This species of coral hermit crab (Paguritta sp) is well known, but still awaiting a name from biologists. It lives in a hole in hard coral and traps passing plankton in it's feathery antennae, Yap, Micronesia
Wire coral goby (Bryaninops yongei) on wire coral (Cirrhipathes sp.), a relative of black coral.
Micronesia, Yap, Soft Alcyonarian coral (Dendronephthya sp) illuminated in ocean.
coral reef, Papua New Guinea, Pacific ocean
Caribbean reef and scuba diver, Bahamas, Caribbean Sea, Grand Bahama
Caribbean reef and scuba diver, Bahamas, Caribbean Sea, Grand Bahama
Caribbean reef and scuba diver, Bonaire, Caribbean Sea
Coral Reef with Gorgonian Fan, Gorgonacea, Papua New Guinea, Pacific ocean
Coral Reef with Hard Corals and Soft Corals, Gorgonacea, Papua New Guinea, Pacific ocean
Drop off with Gorgonian coral, Bahamas, Caribbean Sea
Coral Reef, corals, Papua New Guinea, Pacific ocean
Sea fan and scuba diver, Gorgonaria, Palau, Pacific ocean
Fluoresce Mushroom coral, Coral fluorescenc, Ctenactis echinata, Indonesia, Indian Ocean, Komodo National Park
Mushroom coral with white light, Ctenactis echinata, Indonesia, Indian Ocean, Komodo National Park