"Thornback Cowfish or Shorthorn Cowfish (Lactoria penthacantha), juvenile fish, Great Barrier Reef, UNESCO World Natural Heritage Site, Pacific Ocean, Queensland, Australia, Oceania"

"Whiptail Stingray (Dasyatidae) resting on the sandy ocean floor, Great Barrier Reef, UNESCO World Natural Heritage Site, Pacific Ocean, Queensland, Australia, Oceania"

"Yellowhead Moray Eel or Fimbriated Moray Eel (Gymnothorax fimbriatus), Great Barrier Reef, UNESCO World Natural Heritage Site, Pacific Ocean, Queensland, Australia, Oceania"

"Round Ribbontail Ray (Taeniura meyeni) swimming over the sandy ocean floor, Great Barrier Reef, UNESCO World Natural Heritage Site, Pacific Ocean, Queensland, Australia, Oceania"

"Female scuba diver looking at a Spotfin Burrfish or Pacific Burrfish (Chilomycterus affinis) above a coral reef, UNESCO World Heritage Site, Great Barrier Reef, Australia, Pacific Ocean, Oceania"

"Red-Gilled Nembrotha (Nembrotha rutilans), feeding on Sea Squirts (Ascidiacea), Great Barrier Reef, UNESCO World Natural Heritage Site, Pacific Ocean, Queensland, Australia, Oceania"

"Devil Stinger or Bearded Ghoul (Inimicus didactylus) on the sandy ocean floor, Great Barrier Reef, UNESCO World Natural Heritage Site, Pacific Ocean, Queensland, Australia, Oceania"

"Round Ribbontail Ray (Taeniura meyeni) swimming over a coral reef with Magnificent Sea Anemone or Ritteri Anemone (Heteractis magnifica), Great Barrier Reef, UNESCO World Natural Heritage Site, Pacific Ocean, Queensland, Australia, Oceania"

"Shoal of Sabre Squirrelfish, Giant Squirrelfish or Spiny Squirrelfish (Sargocentron spiniferum) swimming in front of a coral reef, UNESCO World Natural Heritage Site, Pacific Ocean, Queensland, Australia, Oceania"

"Panda Anemonefish or Saddleback Anemonefish (Amphiprion polymus) in a Beaded Sea Anemone or Aurora Host Anemone (Heteractis aurora), Great Barrier Reef, UNESCO World Natural Heritage Site, Pacific Ocean, Queensland, Australia, Oceania"

Scuba diver looking at red, unidentified coral sea fan on coral reef, steep wall, backlit, sun, Great Barrier Reef, UNESCO World Heritage Site, Cairns, Queensland, Australia, Pacific, Oceania

Open coral polyps on Mopsella sea fan (Mopsella) Pacific, Great Barrier Reef, UNESCO World Natural Heritage, 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

Aerial view of Green Island, Great Barrier Reef, Queensland, Australia, Oceania

Reef with feather star and coral fish, Great Barrier Reef, Australia, Oceania

Barramundi Cod (Cromileptes altivelis), Great Barrier Reef, Australia, Oceania

Barramundi Cod (Cromileptes altivelis), Great Barrier Reef, Australia, Oceania

Barramundi Cod (Cromileptes altivelis), Great Barrier Reef, Australia, Oceania

Barramundi Cod (Cromileptes altivelis), Great Barrier Reef, Australia, Oceania

Diver and potato grouper (Epinephelus tukula), Cod Hole, Great Barrier Reef, Australia, Oceania

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

Diver and potato grouper (Epinephelus tukula), Cod Hole, Great Barrier Reef, Australia, Oceania

"Knotted Fan Coral (Melithaea-ochracea), scuba diver at the back, Great Barrier Reef, UNESCO World Natural Heritage Site, Pacific Ocean, Queensland, Australia, Oceania"