Mark Payne-Gill / Three banded armadillo {Tolypeutes tricinctus} walking Captive, UK

Mark Payne-Gill / Three banded armadillo {Tolypeutes tricinctus} uncurling from defensive ball

Suzi Eszterhas / Leopard (Panthera pardus) fur, Jao Reserve, Botswana

Shane Gross / Moorish idol (Zanclus cornutus) juvenile with transparent skin in the open ocean at night off Anilao, Philippines.

Andy Rouse / Sally lightfoot crab, (Grapsus grapsus), feeding on marine iguana parasites and dead skin, Galapagos

Nick Hawkins / Head of a North Atlantic right whale (Eubalaena glacialis) showing callosities, patches of roughened skin that are unique to each whale. Gulf of Saint Lawrence, Canada. IUCN Status: Endangered. August

Ingo Arndt / Adult Egyptian Locust (Anacridium aegyptium) emerging from nymphal skin, captive, Africa. Winner of Fritz Polking portfolio prize, GDT 2012 competition.

Francois Savigny / Close up of Leopard skin {Panthera pardus} Kalahari National Park, Botswana

Ingo Arndt / Saturniid moth caterpillar close up of spines {Syssphinx mexicana} Costa Rica

Ingo Arndt / Ornate box turtle retracted into shell {Terrapene ornata} USA

Ingo Arndt / Giant tortoise {Geochelone elephantopus} Galapagos

Ingo Arndt / Natterjack toad {Bufo calamita} portrait Germany