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

Alex Mustard / Large whip goby (Bryaninops amplus) with a parasitic copepod (with two trailing egg ribbons) perched on Red whip coral. Whale Rock. Fiabacet Islands, Misool, Raja Ampat, West Papua, Indonesia. Ceram S...

Juergen Freund / Chambered nautilus (Nautilus pompilius) with red whip coral. Osprey Reef, Great Barrier Reef, Queensland, Australia.

Juergen Freund / Diver observing Coral razor / Shrimp fish (Aeoliscus strigatus) camouflaged amongst whip coral on coral reef, North Sulawesi, Indonesia. Model released.

Fred Bavendam / Crescent-tail Bigeye (Priacanthus hamrur) in front of a sea fan, Uepi Island, Solomon Islands

Doug Perrine / Red whip coral {Ellisella sp} Bahamas

Chris Newbert / Underwater reef scene with Sea Whips, Gorgonian Whip Coral, blossoming Soft Corals, Guard Plate Coral, and schools of Pseudanthias, Red Sea, Egypt

Chris Newbert / Soft Coral (Dendronephthya sp) outcroppings, Sea Fan (Subergorgia sp) and Glassfish (Parapriacanthus ransonneti)

Francis Abbott / Seawhip coral {Junceella sp} Red Sea

Franco Banfi / Red sea whip coral (Ellisella sp) Lighthouse Reef, Cabilao Island, Bohol, Central Visayas, Philippines, Pacific Ocean.

Alex Mustard / Red whip coral (Ctenocella sp.) with a school of fish above. Fiabacet Islands, Misool, Raja Ampat, West Papua, Indonesia. Ceram Sea, Tropcial West Pacific Ocean

Georgette Douwma / Gorgonian / Sea whip coral (Ellisella ceratophyta), close up, West Papua, Indonesia.

Linda Pitkin / Sea whips, gorgonian coral (Ellisella sp.) Cape Kri, Dampier Strait, Raja Ampat, West Papua, Indonesia, March 2016

Pascal Kobeh / Red whip coral (Ellisella cercidia) and a Delicate sea whip (Junceella fragilis) Palau Philippine Sea

Georgette Douwma / Red sea whip coral (Ellisella ceratophyta) Similan Islands, Andaman Sea, Thailand.

Georgette Douwma / Red sea whips (Junceella juncea) growing on granite boulder. Similan Islands, Andaman Sea, Thailand.

Franco Banfi / Red gorgonian coral (Paramuricea clavata) covered with mucilage, a symptom of rising sea temperature, Ventimiglia, Italy, Ligurian Sea, Mediterranean.

Franco Banfi / Red gorgonian coral (Paramuricea clavata) covered with mucilage, a symptom of rising sea temperature, Punta Campanella Marine Reserve, Massa Lubrense, Italy, Tyrrhenian Sea, Mediterranean.

Franco Banfi / Red fan corals (Paramuricea clavata), Yellow gorgonian, (Eunicella cavolini) and Yellow cave-sponges (Aplysina cavernicola), Ischia Island, Italy, Tyrrhenian Sea, Mediterranean.

Juergen Freund / Harlequin ghost pipefish (Solenostomus paradoxus) amongst Red sea whips (Ellisella sp) Kimbe Bay, New Britain, Papua New Guinea.

Pascal Kobeh / Diver near barrel sponge (Xestospongia testudinaria), hard coral (Porites sp) and red whip coral (Ctenocella sp), Walindi, Papua New Guinea, Bismarck Sea.

Alex Mustard / Golden damselfish (Amblyglyphidodon aureus) hiding amongst the branches of red whip coral (Ctenocella sp.) Misool, Raja Ampat, West Papua, Indonesia.

Alex Mustard / Translucent goby (Bryaninops erythrops) rests on sponge (Pione vastifica) covered in spionid worms (Polydorella smurovi) Nuweiba, Sinai, Egypt. Gulf of Aqaba, Red Sea.

Alex Mustard / Wire coral goby (Bryaninops youngei) on yellow wire coral (Cirripathes anguina) The Alternatives, Sha'ab Mahmood, Sinai, Egypt. Red Sea.

Alex Mustard / Wire coral goby (Bryaninops youngei) on Yellow wire coral (Cirripathes anguina) The Alternatives, Sha'ab Mahmood, Sinai, Egypt. Red Sea.

Alex Mustard / Translucent goby (Bryaninops erythrops) on red sponge (Pione sp.) Sinai, Egypt. Red Sea.

Solvin Zankl / Whip coral (Ellisella ceratophyta) on reef, Raja Ampat, West Papua, Indonesia, Pacific Ocean.

Solvin Zankl / Whip coral (Ellisella ceratophyta) on reef, Raja Ampat, West Papua, Indonesia, Pacific Ocean.

Franco Banfi / Red sea fan (Paramuricea clavata) Stupiste Out dive site, Vis Island, Croatia, Adriatic Sea, Mediterranean

Franco Banfi / Wall covered with Sponges (Verongia / Aplysina cavernicola) and Red gorgonia (Paramuricea clavata) Ischia Island, Italy, Tyrrhenian Sea, Mediterranean

Franco Banfi / Red seafan (Paramuricea clavata) damaged from the high temperature of the water, covered with algae, Ischia Island, Italy, Tyrrhenian Sea, Mediterranean

Franco Banfi / Red seafan (Paramuricea clavata) damaged from the high temperature of the water, Ischia Island, Italy, Tyrrhenian Sea, Mediterranean

Franco Banfi / Polyps of red seafan (Paramuricea clavata) Ischia Island, Italy, Tyrrhenian Sea, Mediterranean

Franco Banfi / Catshark egg (Scyliorhinus sp) on Red sea fan (Paramuricea clavata) Stupiste In dive site, Vis Island, Croatia, Adriatic Sea, Mediterranean

Franco Banfi / Red sea fan (Paramuricea clavata) and Yellow cluster anemones (Parazoanthus axinellae) Wall of Bisevo, Vis Island, Croatia, Adriatic Sea, Mediterranean

Franco Banfi / Black coral (Gerardia savaglia) and Red sea fan (Paramuricea clavata) Wall of Bisevo, Vis Island, Croatia, Adriatic Sea, Mediterranean

Franco Banfi / Red seafan (Paramuricea clavata) and Yellow cluster anemone (Parazoanthus axinellae) Punta Sant'Angelo dive-site, Ischia Island, Italy, Tyrrhenian Sea, Mediterranean

Franco Banfi / Red seafan (Paramuricea clavata) and fish, Ischia Island, Italy, Tyrrhenian Sea, Mediterranean

Franco Banfi / Red seafan (Paramuricea clavata) and Yellow cluster anemone (Parazoanthus axinellae) Ischia Island, Italy, Tyrrhenian Sea, Mediterranean

Franco Banfi / Red seafan (Paramuricea clavata) Yellow gorgonian (Eunicella cavolini), Yellow sponges (Aplysina cavernicola) and Yellow cluster anemone (Parazoanthus axinellae) Punta Sant'Angelo dive-site, Ischia Is...

Franco Banfi / Scuba diver and Red seafan (Paramuricea clavata) Yellow gorgonian (Eunicella cavolini) and Yellow Cluster Anemone (Parazoanthus axinellae), Punta Sant'Angelo dive-site, Ischia Island, Italy, Tyrrhenia...

Franco Banfi / Red seafan (Paramuricea clavata) Yellow gorgonian (Eunicella cavolini) and Yellow Cluster Anemone (Parazoanthus axinellae) Punta Sant'Angelo dive-site, Ischia Island, Italy, Tyrrhenian Sea, Mediterran...

Juergen Freund / Red whip corals / sea whips (Ellisella sp) West New Britain, Papua New Guinea.

Juergen Freund / Red whip corals / sea whips (Ellisella sp) bending in the current, Kimbe Bay, West New Britain, Papua New Guinea.

Birgitte Wilms / Sea Fan (Acabaria sp) with polyps extended for feeding, Solomon Islands

Birgitte Wilms / Soft coral and sea fan, Solomon Islands

Birgitte Wilms / Soft coral and sea fan, Solomon Islands

Juergen Freund / Pygmy seahorse (Hippocampus denise) on a red sea whip - not its usual fan coral habitat, in which it is much better camouflaged. Misool, Raja Ampat, West Papua, Indonesia,

Juergen Freund / Allied cowry (Aclyvolva lamyi) camouflaged on red whip coral, New Ireland, Papua New Guinea

Juergen Freund / Red whip corals / sea whips (Ellisella sp) Kimbe Bay, Papua New Guinea, Indo-pacific.

Juergen Freund / Denise's pygmy seahorse (Hippocampus denise) on a red sea whip. Its usual habitat is a fan coral where it is much better camouflaged. Misool, Raja Ampat, West Papua, Indonesia

Juergen Freund / Red whip corals / sea whips (Ellisella sp) and various sponges on coral reef, Indo-pacific

Juergen Freund / Red whip corals / sea whips (Ellisella sp) and various sponges on coral reef, Indo-pacific

Juergen Freund / Red whip corals (Ctenocella pectinata) with Featherstar (Crinoidea) attached, Indo-pacific

Hiroya Minakuchi / Longnose Hawkfish (Oxycirrhites typus) camouflaged on sea fan, Celebes Sea

Fred Bavendam / Large Whip Goby (Bryaninops amplus) on coral, Australia

Fred Bavendam / White-lined Rock Cod (Anyperodon leucogrammicus) in front of sea fan, Kimbe Bay, Papua New Guinea

Chris Newbert / Soft Coral (Dendronephthya sp) and Sea Fan (Melithaea sp) on mangrove root, Indonesia

Tim Laman / Red whip coral on reef, Pacific islands

Juergen Freund / Dr Billy Sinclair, Senior Lecturer at Central Queensland University, Rockhampton, observing nautilus swimming amidst red whip coral. Queensland, Australia.

Juergen Freund / Diver watching Chambered nautilus (Nautilus pompilius) in red whip coral, Queensland, Australia

Juergen Freund / Chambered nautilus (Nautilus pompilius) in red whip coral, Queensland, Australia

GEORGETTE DOUWMA / Red whip coral (Ctenocella pectinata). New Guinea. Indo-Pacific.

Birgitte Wilms / Trumpetfish (Aulostomus sp) on Sea Fan (Melithaea sp), 60 feet deep, Solomon Islands

Chris Newbert / Longnose Hawkfish (Oxycirrhites typus) on Sea Fan (Siphonogorgia sp) 60 feet deep, Papua New Guinea

Juergen Freund / Red Fan coral and whip corals with hundreds of Fairy basslets {Pseudanthias sp} Papua New Guinea

Juergen Freund / Red fan coral and whip corals with shoal of fairy basslets {Psuedanthias sp} and diver in background, Papua New Guinea

Chris Newbert / Sea Fan (Melithaea sp) small Sea Fan (Subergorgia sp) and Fusiliers on a coral reef, 50 feet deep, Papua New Guinea

Chris Newbert / Sea Fan (Subergorgia sp) Soft Coral (Dendronephthya sp) and Anthias (Pseudanthias sp) 50 feet deep, Red Sea, Egypt

Birgitte Wilms / Sea Fan (Subergorgia sp) surrounded by schooling reef fish, Red Sea, Egypt

Norbert Wu / Seahorse (Hippocampus sp) on Sea Fan, related to Pipefish, Papua New Guinea

Chris Newbert / Common Lionfish (Pterois volitans) group surrounded by Sea Fans (Melithaea sp) 60 feet deep, Solomon Islands

Fred Bavendam / Sea Fan (Gorgoniidae) and red and yellow Soft Coral (Dendronephthya sp) covering rock, Ko Tachi, Andaman Sea, Thailand

Juergen Freund / Whip Coral (Ctenocella sp) Indo Pacific

David Hall / Shrimpfish / Razorfish in red whip coral (Aeoliscus strigatus)

Gary Bell/ Oceanwide / Gorgonian (Acalycigorgia sp) polyps, Great Barrier Reef, Australia

Pete Oxford / Sea fans, Raja Ampat Islands, Indonesia

Pete Oxford / Chupare Stingray (Himantura schmardae) swimming between Red Mangrove (Rhizophora mangle) aerial roots, Lighthouse Reef, Belize

Roberto Rinaldi / Diver and red whip coral or gorgonian whip coral (juncella sp), Palau.

Roberto Rinaldi / Red whip coral (Junceella sp), Malaysia.

Roberto Rinaldi / Red whip coral (junceella sp), tube sponges (Cribrochalina sp?) and diver, Philippines. Model released.

Franco Banfi / Red sea whip coral (Ellisella grandis) on coral reef, Tubbataha Natural Park, Cagayancillo, Palawan, Philippines, Sulu Sea.

Franco Banfi / Purple queen anthias (Pseudanthias tuka), Lyretail anthias (Pseudanthias squamipinnis) and other reef fish swimming amongst Box fire coral (Acropora millepora) and Sea whips (Leptogorgia virgulata) on...

Alex Mustard / Twotone wrasse (Halichoeres prosopeion) juvenile, swimming in front of a Sea whip (Ellisella sp.), Raja Ampat, West Papua, Ceram Sea, Pacific Ocean.

Alex Mustard / Red sea whip (Ellisella sp.) on a coral reef, Raja Ampat, West Papua, Ceram Sea, Pacific Ocean.

Alex Mustard / Group of red Sea whips (Junceella sp.) growing beneath an overhang on a coral reef, Raja Ampat, West Papua, Ceram Sea, Pacific Ocean.

Alex Mustard / Red sea whip coral (Ellisella sp.) growing on a coral reef, Tubbataha Atolls, Palawan, Philippines, Sulu Sea.

David Fleetham / Black coral goby (Bryaninops tigris) resting on Black coral (Antipatharian sp.), Hawaii, Pacific Ocean.

David Fleetham / Diver swimming past coral reef with Gorgonian fans (Alcyonacea sp.), Red whip corals (Leptogorgia virgulata), Bluespot butterflyfish (Chaetodon plebeius), Fiji, Pacific Ocean.

Franco Banfi / Forkbeard / Musdea (Phycis phycis) swimming through Red gorgonian (Paramuricea clavata), Marine Protected area Punta Campanella, Costa Amalfitana, Italy, Tyrrhenian Sea.

Franco Banfi / Gold coral (Savalia Savaglia) colonising Red gorgonian (Paramuricea clavata), Marine Protected area Punta Campanella, Costa Amalfitana, Italy, Tyrrhenian Sea.

Franco Banfi / Spiny starfish (Marthasterias glacialis), Sponge (Sarcotragus foetidus) and Red gorgonian (Paramuricea clavata) colonising the crossbars of a sunken electricity pylon that fell into the sea during a s...

Franco Banfi / Red and yellow gorgonian (Paramuricea clavata) and Sponge (Sarcotragus foetidus) colonising the crossbars of a sunken electricity pylon that fell into the sea during a storm, Capri Island, Costa Amalf...

Franco Banfi / Shoal of Mediterranean Fairy basslet (Anthias anthias) swimming between Red gorgonian (Paramuricea clavata) that have colonised the crossbars of a sunken electricity pylon that fell into the sea durin...

Franco Banfi / Shoal of Mediterranean Fairy basslet (Anthias anthias) swimming between Red gorgonian (Paramuricea clavata) that have colonised the crossbars of a sunken electricity pylon that fell into the sea durin...