Giant sea fan (Annella mollis). Shark Observatory, Sharm El Sheikh, South Sinai, Red Sea, Egypt.

Crown-of-thorns starfish (Acanthaster planci). Ras Ghozlani, Red Sea, Sharm El Sheikh, South Sinai, Red Sea, Egypt. (rr)

Giant sea fan (Annella mollis). Ras Ghamila, Sharm El Sheikh, South Sinai, Red Sea, Egypt.

Group of divers carrying out a safety stop. Jackson Reef, Sharm El Sheikh, South Sinai, Red Sea, Egypt.

Crocodile fish (Papilloculiceps longiceps). Jackson Reef, Sharm El Sheikh, South Sinai, Red Sea, Egypt

Blacktip grouper (Epinephelus fasciatus) Jackson Reef, Sharm El Sheikh, South Sinai, Red Sea, Egypt.

Yellow boxfish (Ostracion cubicus). Na'ama Bay, Sharm El Sheikh, South Sinai, Red Sea, Egypt.

Fringed blenny (Mimoblennius cirrosus) hiding in the coral. Na'ama Bay, Sharm El Sheikh, South Sinai, Red Sea, Egypt.

Stonefish (Synanceia verrucosa). Jackson Reef, Sharm El Sheikh, South Sinai, Red Sea, Egypt.

Napoleon wrasse (Cheilinus undulatus). Species endangered. Na'ama Bay, Sharm El Sheikh, South Sinai, Red Sea, Egypt.

Longnose hawkfish (Oxycirrhites typus) pictured here showing an unusual behaviour of swimming away from it's protection of the host coral. Dunraven, Sharm El Sheikh, South Sinai, Red Sea, Egypt.

Longnose hawkfish (Oxycirrhites typus). Ras Mohamed National Park, Sharm El Sheikh; South Sinai; Red Sea; Egypt

Hard coral growth on the wreck of the Kormoran. Laguna Reef, Sharm El Sheikh, South Sinai, Red Sea, Egypt.

Lobophyllia corymbosa. Na'ama Bay, Sharm El Sheikh, South Sinai, Red Sea, Egypt.

Soft coral (Dendronephthya klunzingeri). Woodhouse Reef, Sharm El Sheikh, South Sinai, Red Sea, Egypt.

Broccoli coral (Dendronephthya klunzingeri). Jackson Reef, Sharm El Sheikh, South Sinai, Red Sea, Egypt.

Slimy leather coral (Sacrophyton trocheliophorum). Na'ama Bay, Sharm El Sheikh, South Sinai, Red Sea, Egypt.

Red Sea mimic blenny (Ecsenius gravieri). Na'ama Bay, Sharm El Sheikh, South Sinai, Red Sea, Egypt.

Risso's dolphin (Grampus griseus) sunbathing on the surface. Woodhouse Reef, Sharm El Sheikh, South Sinai, Red Sea, Egypt.

Porcupinefish (Diodon hystrix). Na'ama Bay, Sharm El Sheikh, South Sinai, Red Sea, Egypt.

Juvenile Yellow boxfish (Ostracion cubicus). Na'ama Bay, Sharm El Sheikh, South Sinai, Red Sea, Egypt.

Net fire coral (Millepora dichotoma). Shark and Yolanda, Sharm El Sheikh, South Sinai, Red Sea, Egypt.

Leather Coral (Sarcophyton ehrenbergi). Ras Za'atar, Ras Mohamed National Park, Sharm El Sheikh, South Sinai, Red Sea, Egypt.

Diver observing the reef. Ras Ghozlani, Sharm El Sheikh, South Sinai, Red Sea, Egypt.