Underwater diver swimming above reef, with orange sea fan, Similan Island, Thailand, Asia

Splendid knotted fan coral (Acabaria splendens), Ras Mohammed National Park, Red Sea, Egypt, North Africa, Africa

Gorgonian Sea Fan - Annella reticulata (Supergorgia reticulata), Sipadan, Sabah, Malaysia, Borneo, South-east Asia

Deepwater gorgonian sea fan (Iciligorgia schrammi), Blue sea background Little Cayman Island, Cayman Islands, Caribbean

Gorgonian Sea Fan - Annella reticulata (Supergorgia reticulata), Sipadan, Sabah, Malaysia, Borneo, South-east Asia

Rare Blue Sea Fan (Acanthogorgia sp.) and diver. Gorontalo, Sulawesi, Indonesia

Colourful coral reef with soft corals Dendronephthya.

A photographer lines up with a camera in a housing to shoot a large red soft coral fan, Indonesia

Palau, longnose hawkfish on yellow sea fan