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

Wave wart slug (Phyllidia undula). Ras Ghozlani, Sharm El Sheikh, South Sinai, Red Sea, Egypt.

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

Yellow-dotted trevally (Carangoides fulvoguttatus) and Giant trevally (Caranx ignobilis). 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)

Mountain coral (Porites lutea) with diver exiting the water at the surface. Ras Umm Sid, Sharm El Sheikh, South Sinai, Red Sea, Egypt.

Twin-spot snapper (Lutjanus bohar) at cleaning station. Shark and Yolanda; Ras Mohamed National Park; 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.

Bighorn nembrotha (Nembrotha megalocera). Ras Za'atar, Ras Mohamed National Park, Sharm El Sheikh, South Sinai, Red Sea, Egypt.

Blackfin barracuda (Sphyraena qenie) circling Shark and Yolanda; Ras Mohamed National Park; Sharm El Sheikh; South Sinai; Red Sea; Egypt.

Twin-spot snapper (Lutjanus bohar) close-up Shark and Yolanda; Ras Mohamed National Park; Sharm El Sheikh; South Sinai; Red Sea; Egypt.

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