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

Scuba diver with torch looking at coral reef with Finger Coral (Porites attenuata), Great Barrier Reef, UNESCO World Heritage Site, Cairns, Queensland, Australia, Pacific, Oceania

Red, unidentified coral sea fan on coral reef, steep wall, backlit, sun, Great Barrier Reef, UNESCO World Heritage Site, Cairns, Queensland, Australia, Pacific, Oceania

Scuba diver with torch looking at a red Sea Fan (Plexauridae) at coral reef, Great Barrier Reef, UNESCO World Heritage Site, Cairns, Queensland, Australia, Pacific, 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

Piano Fangblenny or Mimic Blenny (Plagiotremus tapeinosoma) peeping out of hole in a coral, coral reef, Great Barrier Reef, UNESCO World Heritage Site, Cairns, Queensland, Australia, Pacific, Oceania

Scuba diver with torch looking at a Melithea Gorgonian Coral (Melithea sp. ) at coral reef, Great Barrier Reef, UNESCO World Heritage Site, Cairns, Queensland, Australia, Pacific, 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

Blackspotted stingray (Taeniura meyeni), swimming over sandy ground, backlit by sun, Great Barrier Reef, UNESCO, World Natural Heritage, Queensland, Cairns, Australia, Pacific Ocean, Oceania

Green turtle (Chelonia mydas) diving under, backlit, Fish Swarm, Total Reflection, Great Barrier Reef, UNESCO, World Natural Heritage, Queensland, Cairns, Australia, Pacific Ocean, Oceania

Teardrop Butterflyfish (Chaetodon unimaculatus) swimming above coral reef, Great Barrier Reef, UNESCO World Heritage Site, Cairns, Queensland, Australia, Pacific, Oceania