Scuba diver watching a Manta Ray (Manta birostris) swimming above coral reef, Great Barrier Reef, UNESCO World Heritage Site, Cairns, Queensland, Australia, Pacific, Oceania

Bushy red Soft Coral (Siphonogorgia godeffroyi) on coral reef, Great Barrier Reef, UNESCO World Heritage Site, Cairns, Queensland, Australia, Pacific, 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

Scuba diver with torch watching school of Oriental Sweetlips (Plectorhinchus vittatus, Plectorhinchus orientalis) at coral reef, Great Barrier Reef, UNESCO World Heritage Site, Cairns, Queensland, Australia, Pacific, Oceania

Open coral polyps on the trunk of a soft coral (Dendronephthya), coral, Pacific, Great Barrier Reef, UNESCO World Heritage, Australia, Oceania

Giant Moray (Gymnothorax javanicus), looking out from coral block in a threatening manner, coral reef, Great Barrier Reef, UNESCO World Heritage Site, Cairns, Queensland, Australia, Pacific, Oceania

Pectoral fin, Red Lionfish (Pterois volitans) detail, Pacific, Great Barrier Reef, UNESCO World Heritage, Australia, Oceania

Detail of tail fin, parrot fish (Scarus), Pacific, Great Barrier Reef, UNESCO World Heritage, Australia, Oceania

Detail of Forsskal's Pleurobranch (Pleurobranchus forskalii), Backshielded Snail, Nudibranch, Detail, Pacific, Great Barrier Reef, UNESCO World Heritage, Australia, Oceania

Slice anemone, Giant Cup Mushroom (Amplexidiscus fenestrafer), detail with mouth, Pacific, Great Barrier Reef, UNESCO World Heritage, Australia, Oceania

Syphon of giant clam (Tridacna gigas), Clam meat, detail, pacifica, Great Barrier Reef, UNESCO World Heritage, Australia, Oceania

Leopard coral grouper (Plectropomus leopardus), Great Barrier Reef, Australia, Oceania

Diver and coral reef, Osprey Reef, Coral Sea, Australia, Oceania

Aerial view Great Barrier Reef, Queensland, Australia, Oceania

Aerial view Great Barrier Reef, Queensland, Australia, Oceania

Aerial view Great Barrier Reef, Queensland, Australia, Oceania

Titan triggerfish (Balistoides viridescens), Great Barrier Reef, Australia, Oceania

Red snapper (Lutjanus bohar), Great Barrier Reef, Australia, Oceania

Titan triggerfish (Balistoides viridescens), Great Barrier Reef, Australia, Oceania

Malabar grouper (Epinephelus malabaricus), Great Barrier Reef, Australia, Oceania

Malabar grouper (Epinephelus malabaricus), Great Barrier Reef, Australia, Oceania

Kuhl's stingray (Neotrygon kuhlii), Great Barrier Reef, Australia, Oceania

Watsons Bay Lizard Island, Great Barrier Reef, Australia, Oceania

"Female scuba diver looking at a Gorgonian, Fan Coral, Soft Coral, UNESCO World Heritage Site, Great Barrier Reef, Australia, Pacific Ocean, Oceania"