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Resort huts beside coral sand beach, lagoon has outer coral reef, Mana Island, Mamanuca Group, west of Viti Levu, Fiji, South Pacific islands, Pacific

Lyretail anthias (Pseudanthias squamipinnis), school over mountain coral, reef, Ras Mohammed National Park, Sharm El Sheikh, Red Sea, Egypt, North Africa, Africa

Underwater view of a coral encrusted lobster pot on sandy ocean floor, Ras Mohammed National Park, Red Sea, Egypt, North Africa, Africa

Scuba diver and instructor performing skills next to coral, Sharm El Sheikh, Red Sea, Egypt, North Africa, Africa

Tropical coral reef scene with a leafy cup coral (salad coral) (Turbinaria reniformi), Ras Mohammed National Park, off Sharm el Sheikh, Sinai, Egypt, Red Sea, Egypt, North Africa, Africa

Island hopping by catamaran around coral fringe in clear waters, Bacuit Bay, El Nido Town, Palawan, Philippines, Southeast Asia, Asia

Parrotfish (Scaridae) an important herbivore in the coral reef ecosystem, for sale in Kudat fish market, Sabah, Malaysian Borneo, Malaysia, Southeast Asia, Asia

The critically endangered hawksbill turtle (Eretmochelys imbricata) above coral reef, Ras Mohammed National Park, off Sharm el-Sheikh, Sinai, Red Sea, Egypt, North Africa, Africa

Tropical coral reef scene with a large table coral (Acropora pharaonis), Ras Mohammed National Park, off Sharm el-Sheikh, Sinai, Red Sea, Egypt, North Africa, Africa

View over Coral Beach and Loch Dunvegan, Claigan, near Dunvegan, Isle of Skye, Inner Hebrides, Highland, Scotland, United Kingdom, Europe

Hard and soft coral landscape scenic at Thetford Reef on the Great Barrier Reef, UNESCO World Heritage Site, Cairns, Queensland, Australia, Pacific

Scuba diver swimming with Gopro in coral landscape scenic at Thetford Reef on the Great Barrier Reef, UNESCO World Heritage Site, Cairns, Queensland, Australia, Pacific

An aerial view of the Great Barrier Reef, UNESCO World Heritage Site, Queensland, Australia, Pacific

Azure vase sponge (Callyspongia plicifera), and sunburst, St. Lucia, West Indies, Caribbean, Central America

Aerial photography of coral reef formations of the Great Barrier Reef, UNESCO World Heritage Site, near Cairns, North Queensland, Australia, Pacific

Striped sweetlips (diagonal banded sweetlips) (Plectorhinchus lineatus), North Ribbon Reef, Great Barrier Reef, UNESCO World Heritage Site, Queensland, Australia, Pacific

Colourful reef fish (Orange and purple anthias sp.) plus with hard and soft corals on reef wall, Queensland, Australia, Pacific

Longnose butterflyfish (Forcipiger flavissimus), adapted to feed in crevices in the reef and snips off soft pieces of corals, Queensland, Australia, Pacific

Colourful reef fish (Orange and purple anthias sp.) plus Leopard Coral grouper (Plectropomus leopardus) with hard and soft corals on reef, Queensland, Australia, Pacific

Mating display by pair of Wire-net filefish (Cantherhines paradalis), Queensland, Australia, Pacific

Colourful, coral covered Reef wall at Osprey Reef, Longfin banner fish (Heniochus acuminatus), Coral Sea, Queensland, Australia, Pacific

View over South Coast and coral reef, Antigua, Leeward Islands, West Indies, Caribbean, Central America

Colourful healthy hard and soft coral reef with long nosed butterflyfish (Forcipiger flavissimus), Matangi Island, Vanua Levu, Fiji, Pacific

Half underwater split view of Coral Beach on Pigeon Island National Park, Trincomalee, Sri Lanka, Asia

Close-up view of a three color parrotfish (Scarus tricolor), coming in for a bite of hard coral, Fiji, South Pacific, Pacific

Adult whitetip reef shark (Triaenodon obesus) with cleaner wrasse, Roroia, Tuamotus, French Polynesia, South Pacific, Pacific

The popcorn shrimp (Periclimenes kororensis) in fungid coral (Heliofungia actiniformis) (mushroom coral), Celebes Sea, Sabah, Malaysia, Southeast Asia, Asia

Red Sea coral grouper (Plectropomus pessuliferus) close-up, Ras Mohammed National Park, off Sharm el-Sheikh, Sinai, Red Sea, Egypt, North Africa, Africa

View over shore at low tide to distant Coral Beach, Claigan, near Dunvegan, Isle of Skye, Inner Hebrides, Highland, Scotland, United Kingdom, Europe

Giant sea fan (Gorgonian fan coral) (Annella mollis), Ras Mohammed National Park, Red Sea, Egypt, North Africa, Africa

Aerial photography of coral reef formations of the Great Barrier Reef, UNESCO World Heritage Site, near Cairns, North Queensland, Australia, Pacific

Golden damsel fish (Amblyglyphidodon aureus) in a coral encrusted bottle, Sulawesi, Indonesia, Southeast Asia, Asia

Coral encrusted biosphere in the marine reserve at Gangga Island, Sulawesi, Indonesia, Southeast Asia, Asia

Coral substrate forming an underwater cave, Ras Mohammed National Park, Sharm El Sheikh, Red Sea, Egypt, North Africa, Africa

Rising to 260 feet above sea level, Makatea is a raised coral atoll with fresh water, Tuamotus, French Polynesia, South Pacific, Pacific

Golden damselfish (Amblyglyphidodon aureus) a zoo plankton feeding coral reef fish seen here ingesting food, Matangi Island, Vanua Levu, Fiji, Pacific

Macro shot of stem and branches of pink soft broccoli coral (Dendronephthya hemprichi), Ras Mohammed National Park, off Sharm el-Sheikh, Sinai, Red Sea, Egypt, North Africa, Africa

Macro shot of stem and branches of orange soft broccoli coral (Dendronephthya hemprichi), Ras Mohammed National Park, off Sharm el-Sheikh, Sinai, Red Sea, Egypt, North Africa, Africa

Blackmouth sea cucumber (Pearsonothuria graeffei) on coral reef, Ras Mohammed National Park, Sharm Eel-Sheikh, Red Sea, Egypt, North Africa, Africa

Lyretail anthias (Pseudanthias squamipinnis) side view of two females, Ras Mohammed National Park, off Sharm el-Sheikh, Sinai, Red Sea, Egypt, North Africa, Africa

Underwater image of the inner lagoon of Apataki coral atoll, Palliser Islands, Tuamotus, French Polynesia, South Pacific, Pacific

School of blue striped snapper (Lutjanus kasmira) underneath table coral, Naama Bay, off Sharm el-Sheikh, Sinai, Red Sea, Egypt, North Africa, Africa

Shorthead fangblenny (Petroscirtes breviceps), inside a coral encrusted bottle, Philippines, Southeast Asia, Asia

Cave coral (Tubastrea sp.) (Dendrophyllidae) polyps extended and feeding at night, Queensland, Australia, Pacific

Colourful reef fishes on the reef at Tumakohua Pass, Fakarava Atoll, Tuamotus, French Polynesia, South Pacific, Pacific

Aerial photography of coral reef formations of the Great Barrier Reef, UNESCO World Heritage Site, near Cairns, North Queensland, Australia, Pacific

Shorthead fangblenny (Petroscirtes breviceps), inside a coral encrusted bottle, Philippines, Southeast Asia, Asia

Beautiful soft coral on the island of Vanua Balavu, Northern Lau Group, Republic of Fiji, South Pacific Islands, Pacific

Adult grey reef shark (Carcharhinus amblyrhynchos) in Tumakohua Pass, Fakarava, French Polynesia, South Pacific, Pacific

Mountain coral (porites lutea), Ras Mohammed National Park, Sharm El Sheikh, Red Sea, Egypt, North Africa, Africa

Longnose hawkfish (Oxycirrhites typus) on gorgonian sea fans (Subergorgia mollis) a hard coral species found in high current areas, Matangi Island, Vanua Levu, Fiji, Pacific

Silhouette of two scuba divers above Table coral, Ras Mohammed National Park, Sharm el-Sheikh, Red Sea, Egypt, North Africa, Africa

Aerial photography of coral reef formations of the Great Barrier Reef, UNESCO World Heritage Site, near Cairns, North Queensland, Australia, Pacific

Coral growth inside the wreck of the Lesleen M freighter, sunk as an artificial reef in 1985 in Anse Cochon Bay, St. Lucia, West Indies, Caribbean, Central America

Fin of a shorthead fangblenny (Petroscirtes breviceps), inside a coral encrusted bottle, Philippines, Southeast Asia, Asia

Aerial photography of coral reef formations of the Great Barrier Reef, UNESCO World Heritage Site, near Cairns, North Queensland, Australia, Pacific

A view of Grace Bay at the Coral Garden Resort and Somewhere Restaurant, Providenciales, Turks and Caicos, in the Caribbean, West Indies, Central America

Close-up of clown fish and sea anemones, off Sharm el-Sheikh, Sinai, Red Sea, Egypt, North Africa, Africa

Tropical coral reef scene, Ras Mohammed National Park, off Sharm el-Sheikh, Sinai, Red Sea, Egypt, North Africa, Africa

Rising to 260 feet above sea level, Makatea is a raised coral atoll with fresh water, Tuamotus, French Polynesia, South Pacific, Pacific

Rising to 260 feet above sea level, Makatea is a raised coral atoll with fresh water, Tuamotus, French Polynesia, South Pacific, Pacific

Common bigeye (Priacanthus hamrur), sheltering next to coral reef, Ras Mohammed National Park, Red Sea, Egypt, North Africa, Africa

Lyretail anthias (Pseudanthias squamipinnis) close-up of male, Ras Mohammed National Park, off Sharm el-Sheikh, Sinai, Red Sea, Egypt, North Africa, Africa

White spotted filefish (Cantherhines macrocerus), St. Lucia, West Indies, Caribbean, Central America