Sue Daly / Close-up of a group of Yellow cluster anemones (Parazoanthus axinellae), Sark, British Channel Islands, UK, August.

Sue Daly / Close-up of a group of Yellow cluster anemones (Parazoanthus axinellae), Sark, British Channel Islands, UK, August.

Sue Daly / Yellow cluster anemones (Parazoanthus axinellae) with a Bloody Henry starfish (Henricia oculata), Sark, British Channel Islands, UK, August.

Sue Daly / Yellow Cluster Anemone (Parazoanthus axinellae) Guillaumesse, Sark, British Channel Islands.

Franco Banfi / Spider crab (Maja squinado) and Yellow cluster anemone (Parazoanthus axinellae) Stupiste Out dive site, 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 / Scuba diver and Yellow cluster anemone (Parazoanthus axinellae) Ischia Island, Italy, Tyrrhenian Sea, Mediterranean

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...

Franco Banfi / Scuba diver and rock covered with Coral (Parazoanthus axinellae) Punta Campanella Marine Protected Area, Costa Amalfitana, Italy, Tyrrhenian Sea, Mediterranean.

Franco Banfi / Big rock covered with Yellow cluster anemone, (Parazoanthus axinellae) Vervece Rock, Punta Campanella Marine Protected Area, Amalfi Coast, Italy, Tyrrhenian Sea, Mediterranean.

Franco Banfi / Red sea fan (Paramuricea clavata) and Yellow cluster anemone (Parazoanthus axinellae) covered with mucilage - seafans provide the best support for mucilage growth. Wall of Bisevo dive site, Vis Island...