Roland Seitre / Western Quoll (Dasyurus geoffroii) at night, Alice Springs, Australia

D. Parer & E. Parer-Cook / Eastern Quoll (Dasyurus viverrinus) with young, Tasmania, Australia

D. Parer & E. Parer-Cook / Eastern Quoll (Dasyurus viverrinus) mother with three young, Tasmania, Australia

D. Parer & E. Parer-Cook / Eastern Quoll (Dasyurus viverrinus) female and young, Tasmania, Australia

Roland Seitre / Western Quoll (Dasyurus geoffroii), native to Australia

Juergen Freund / Banded coral (Cleaning) shrimp on coral, Caribbean Sea off Cuba.

Magnus Lundgren / Wild Wonders of China / Larval banded coral shrimp (Stenopus hispidus) at night, Kenting National Park, Hengchun Peninsula, Taiwan

David Fleetham / Yellowmargin moray eel (Gymnothorax flavimarginatus) with a Banded coral shrimp (Stenopus hispidus) inspecting it for parasites, Hawaii.

David Fleetham / Banded boxer / coral shrimp (Stenopus hispidus) on the nose of a giant moray eel (Gymnothorax javanicus), checking for parasites. Yap, Micronesia.

Franco Banfi / Couple of banded boxer shrimp (Stenopus hispidus) Tubbataha Reef Natural Park, UNESCO World Heritage Site, Sulu Sea, Cagayancillo, Palawan, Philippines

Pascal Kobeh / Banded coral shrimp (Stenopus hispidus) Maldives. Indian Ocean.

Claudio Contreras / Banded Coral Shrimp (Stenopus hispidus), Batasan Island, Danajon Bank, Central Visayas, Philippines, April

Georgette Douwma / Banded coral shrimp (Stenopus hispidus). Maldives.

Sue Daly / Anemone prawn (Periclimenes sagittifer) Channel Islands, UK June

Michele Westmorland / Banded coral shrimp (Stenopus hispidus) and Hamlet (Hypoplectrus sp.), St Vincent, West-Indies, Caribbean, May.

Graham Eaton / Two Banded Coral Shrimp (Stenopus hispidus). St Lucia, West Indies, July.

Sue Daly / Anemone Prawn (Periclimenes sagittifer). Channel Islands, UK, July.