Edwin Giesbers / Air bubbles trapped in ice, the Netherlands

Fred Bavendam / Fusilier (Caesio sp) school streaming over a vast field of Disc Coral (Turbinaria reniformis), Manado, Sulawesi, Indonesia

Jeff Rotman / Symbiotic shrimp on basal disc of sea anemone, Red Sea

Nigel Cattlin / Ragwort (Jacobaea vulgaris) flowers with ray and disc florets. Berkshire, England, UK. July.

Magnus Lundgren / Wild Wonders of China / Retracted elephant ear anemone (Amplexidiscus fenestrafer) Xiaoliuqiu Island, Taiwan

Magnus Lundgren / Wild Wonders of China / Elephant ear anemone (Amplexidiscus fenestrafer) Xiaoliuqiu Island, Taiwan

Gary Bell/ Oceanwide / Disc Coral (Turbinaria reniformis) and Banana Fusilier (Pterocaesio pisang) school, Great Barrier Reef, Australia

Georgette Douwma / Corallimorph (Amplexidiscus fenestrafer). Norht Sulawesi, Indonesia.

Will Watson / Moroccan painted frog (Discoglossus scovazzi), Talassemtane National Park, Rif Mountains, Morocco.

David Fleetham / Opening of Corallimorpharian / Disc anemone(Amplexidiscus fenestrafer), Komodo National Park, Indonesia.

Norbert Wu / Disc Coral (Turbinaria reniformis) reef, Papua New Guinea

Franco Banfi / Commensal shrimp (Pliopontonia furtiva) camouflaged on Disc anemone (Amplexidiscus fenestrafer) Lighthouse Reef, Cabilao Island, Bohol, Central Visayas, Philippines, Pacific Ocean.