Alex Mustard / Split level image of Leather corals (Sarcophyton sp.) flourishing in shallow water close to uninhabited coral islands. Misool, Raja Ampat, West Papua, Indonesia. Ceram Sea. Tropical West Pacific Ocean...

SCOTLAND: The Big Picture / Dead man's fingers (Alcyonium digitatum) on a rocky reef with view of the sky, Shetland, Scotland, UK, August.

Alex Mustard / Colourful reef scene with Leather corals (Sarcophyton sp.), Soft corals (Dendronephthya sp.) Seafans (Melithea sp.) and fish, including Magenta slender anthias (Luzonichthys waitei) and Scalefin anthi...

Alex Mustard / Diver exploring the wreck of HMS Scylla, which is colonized by Dead man's fingers (Alcyonium digitatum). Whitsands Bay, Cornwall, England. UK, July.

Juergen Freund / Flexible Leather Coral (Sinularia flexibilis) spawning during the annual mass coral spawning event, in November, Great Barrier Reef, Queensland, Australia

Chris Newbert / Hawksbill Sea Turtle (Eretmochelys imbricata) and Leather Coral (Sarcophyton sp) on reef, Indonesia

Magnus Lundgren / Wild Wonders of China / Leather coral (Alcyoniidae sp) Xiaoliuqiu Island, Taiwan

SCOTLAND: The Big Picture / Colourful rocky reef with Dead man's finger (Alcyonium digitatum) and Kelp forest, North Sea, Shetland

SCOTLAND: The Big Picture / Rocky reef with Dead man's fingers (Alcyonium digitatum) community of soft corals and anemones, Scotland, UK, August.

SCOTLAND: The Big Picture / Soft coral / Dead man's finger (Alcyonium digitatum) growing on a rocky reef with kelp forest above, Scotland, UK, February.

Pascal Kobeh / Soft corals (Sarcophyton sp.) with the polyps open, Sulu Sea, Philippines.

Alex Mustard / Solar powered nudibranch (Phyllodesmium longicirrum) feeding on a Mushroom leather coral (Sarcophyton sp.). Bitung, North Sulawesi, Indonesia. Lembeh Strait, Molucca Sea