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

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

Wild Wonders of Europe / Pitkin / Gorgonian coral (Paramuricea clavata) on rock face covered with Yellow encrusting anemones (Parazoanthus axinellae) sponges and corals, 'Horsehead', Lavezzi Islands, Corsica, France, September 2008

Franco Banfi / Scuba diver with Red gorgonian coral (Paramuricea clavata), Santa Teresa, Sardinia, Italy, Tyrrhenian Sea, Mediterranean.

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.

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

Alex Mustard / Mediterranean anthias (Anthias anthias) swarm over gorgonians (Paramuricea clavata). Marine Protected Area of Portofino (Area Marina Protetta, Portofino), Liguria, Italy. Mediterranean Sea. Model Rele...

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