David Fleetham / Necklace sea star (Fromia monilis) on gorgonian coral, Indonesia.

David Fleetham / Pair of squat lobsters (Galathea sp) on Gorgonian coral, Komodo, Indonesia.

Linda Pitkin / 2020VISION / Pink sea fan / Warty coral (Eunicella verrucosa) with attached eggs of a Common squid (Loligo vulgaris), eggcase of a Lesser-spotted dogfish (Scyliorhinus canicula), and Spiny starfish (Marthasterias...

Alex Mustard / A diver exploring a coral reef with formation of brown tube sponges (Agelas conifera) red rope sponges (Amphimedon compressa) and deepwater sea fans (Iciligorgia nodulifera) East End, Grand Cayman, Ca...

Roberto Rinaldi / Yellow fan coral / Seafan (Paramuricea clavata) amongst mass of invasive algae (Caulerpa taxifolia) with Rainbow wrasse fish (Coris julis), Strait of Messina, Southern Italy

Jeff Rotman / Gorgonian Seafan Coral (Gorgonacea) polyps open to feed at night. South China Sea, Sipadan Island, Borneo.

Juergen Freund / Gorgonian fan coral with Featherstar / crinoid attached, West New Britain, Papua New Guinea.

Juergen Freund / Gorgonian fan coral with crinoids / featherstars, Kimbe Bay, West New Britain, Papua New Guinea

Juergen Freund / View of sea surface through a Whip coral forest (Junceella sp) Kimbe Bay, West New Britain, Papua New Guinea

Juergen Freund / Convict blennies / False catfish, juvenile, (Pholidichthys leucotaenia) amidst a fan coral. Misool, Raja Ampat, West Papua, Indonesia,

Juergen Freund / Pygmy seahorse (Hippocampus bargibanti) camouflaged in a fancoral. Misool, Raja Ampat, West Papua, Indonesia

Juergen Freund / Golden damselfish (Amblyglyphidodon aureus) swimming around a fan coral. Misool, Raja Ampat, West Papua, Indonesia