Michael Pitts / Longnose hawkfish {Oxycirrhites typus} on fan coral, Papua New Guinea

Alex Mustard / A shiver of Caribbean reef sharks (Carcharhinus perezi) swim over a coral reef with Common sea fans (Gorgonia ventalina) and sea plumes (Pseudopterogorgia sp). Jardines de la Reina, Gardens of the Que...

Alex Mustard / A vibrant Caribbean coral reef with two Reef sharks (Carcharhinus perezi) and Common sea fans (Gorgonia ventalina) and sea plumes (Pseudopterogorgia sp). Jardines de la Reina, Gardens of the Queen Nat...

Franco Banfi / Cuckoo wrasse (Labrus mixtus) male in front of Red sea fan, (Paramuricea clavata), Stupiste In dive site, Vis Island, Croatia, Adriatic Sea, Mediterranean

Alex Mustard / RF - Denise's pygmy seahorse (Hippocampus denise) looks out from its home in a sea fan (Annella sp.). Misool, Raja Ampat, West Papua, Indonesia. Ceram Sea. Tropical West Pacific Ocean. (This image...

Shane Gross / Pygmy seahorse (Hippocampus bargibanti) holding on to a branch of a sea fan coral. Malapascua, Philippines.

David Fleetham / Bargibant's pygmy seahorse (Hippocampus bargibanti) wrapped around Eye fan coral (Cnidaria sp). Philippines.

Jordi Chias / Spotted catshark (Scyliorhinus canicula) just hatched from egg case that is on Seafan (Paramuricea clavata), Ullastres seamount, Costa Brava, Llafranch, Catalunya, Spain

Brandon Cole / Pygmy seahorse (Hippocampus bargibanti) camouflaged in sea fan, Indonesia, tropical Pacific Ocean.

Alex Mustard / Close up of tiny (10mm) Pygmy seahorse (Hippocampus bargibanti) living disguised in Muricella sp. sea fan. Bitung, North Sulawesi, Indonesia. Lembeh Strait, Molucca Sea.

Ingo Arndt / Compilation of various corals including many Fan corals (Gorgonacea sp) from collection at Senckenberg Museum, Frankfurt, Germany.

Ingo Arndt / Fan Coral (Echinogorgia sp) from Indo-Pacific, in collection at Senckenberg Museum, Frankfurt, Germany.

Franco Banfi,Franco Banfi / Pygmy seahorse, not currently described hiding in sea fan, Raja Ampat, Irian Jaya, West Papua, Indonesia, Pacific Ocean

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

Jurgen Freund / Schooling Silverside fish (Antherinidae) split level with karst limestone walls, fan coral and featherstar, North Raja Ampat, West Papua, Indonesia, February 2002.

Jurgen Freund / Brittlestar on gorgonian fan coral, Papua New Guinea.

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

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

Jurgen Freund / Pygmy seahorse (Hippocampus bargibanti) camouflaged in a fan coral. Misool, Raja Ampat, West Papua, Indonesia.

Jurgen Freund / Denise's pygmy seahorse (Hippocampus denise) in its fan coral. Misool, Raja Ampat, West Papua, Indonesia,

Jurgen Freund / Tunicates / Ascidians / Sea squirts (Atriolum robustum) on a fan coral branch. Misool, Raja Ampat, West Papua, Indonesia.

Jurgen Freund / Fan coral (Gorgonacea) with open polyps. Misool, Raja Ampat, West Papua, Indonesia..

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

Jurgen Freund / Denise's pygmy seahorse (Hippocampus denise) in its fan coral. Misool, Raja Ampat, West Papua, Indonesia

Jurgen Freund / Tiny Brittlestars (Ophiuridae) wrapped around the branches of Fan coral, Misool, Raja Ampat, West Papua, Indonesia.

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

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

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

Jurgen Freund / Split-level shot of Fan coral (Gorgonacea) in the shallows with boat shilouetted against the sunset in the background. North Raja Ampat, West Papua, Indonesia, February 2010

Jurgen Freund / Colorful coral reef with soft corals (Alcyonacea) and fan corals (Gorgonacea). Misool, Raja Ampat, West Papua, Indonesia, January

Tim Laman / Denise's Pygmy seahorse (Hippocampus denise) camouflaged in a Sea Fan. Orange colour form. Vicinity of Gam Island, Raja Ampat, Indonesia, May 2007

Tim Laman / Denise's Pygmy seahorse (Hippocampus denise) camouflaging itself in a Sea Fan. Yellow colour form. Pisang Islands, West of Fak Fak Peninsula. West Papua, Indonesia, April 2007

Tim Laman / Lionfish (Pterois) hovering in a Sea Fan in a view looking toward the surface of the water. Misool Island vicinity. Near smaller island of Fiabacet. West Papua, Indonesia, April 2007

Sue Flood / Luxury hotel room looking over the Pitons, Jade Mountain hotel, St Lucia, May 2007

Sue Daly / Close up of polyps and tentacles of Sea fan (Gorgonia sp) Cebu, Philippines, March

Wild Wonders of Europe / Zankl / Close-up of European fan worm (Sabella / Spirographis spallanzani) Malta, Mediteranean, May 2009

Wild Wonders of Europe / Zankl / European fan worms (Sabella / Spirographis spallanzani) Malta, Mediteranean, May 2009

Wild Wonders of Europe / Zankl / European fan worms (Sabella / Spirographis spallanzani) Malta, Mediteranean, May 2009

Wild Wonders of Europe / Lundgren / Blanket stars (Gorgonocephalus caputmedusae) climbing Fan coral (Paramuricea placomus) to position themselves in water current, Trondheimsfjorden, Norway, February 2009

Brandon Cole / Goby {Gobiidae} on gorgonian sea fan, Indonesia.

Jurgen Freund / Feather star {Crinoidea} on fan coral, Indo Pacific

Jurgen Freund / Featherstar in fan coral {Crinoidea} Indo-Pacific

Jurgen Freund / Featherstar {Crinoidea} on fan coral, Sulu-sulawesi seas, Indo Pacific

Jurgen Freund / Soft coral {Dendronephthya sp} + Gorgonia fan Sulu-Sulawesi seas, Indo Pacific

Jeff Rotman / Giant seafan coral and diver {Subergorgia mollis} on reef Palau Is, Micronesia Model released.

Sue Daly / Warty coral {Eunicella verrucosa} Sark, Channel Isles, UK