Edwin Giesbers / European pond turtle (Emys orbicularis), swimming with head above water, Lesbos, Greece

Stephen Dalton / Garden spider {Araneus diadematus} constructing its orb web, UK, Sequence 5/5 , The final web is complete. Note that although all the final sticky spirals are visible, most of the radials are invisibl...

Nick Upton / Invisible spider (Drapetisca socialis) on an old house wall, Wiltshire, UK, September.

Martin Willis / Northern Leaf-tailed Gecko (Saltuarius cornutus) showing lichen-like camouflage that renders it almost invisible in its surroundings, Atherton Tableland, Queensland, Australia

Martin Willis / Northern Leaf-tailed Gecko (Saltuarius cornutus) showing lichen-like camouflage that renders it almost invisible in its surroundings, Atherton Tableland, Queensland, Australia

George Sanker / Young Bighorn Sheep (Ovis canadensis) perfectly camouflaged against rocky mountain side. Yellowstone National Park, Wyoming, USA, June.

Juergen Freund / Sponge decorator crab (Hyastenus elatus) almost invisible under the sponges attached to its shell. Lembeh Strait, North Sulawesi, Indonesia.

Stephen Dalton / Invisible spider (Drapetisca socialis) UK

Stephen Dalton / Invisible money spider (Drapetisca socialis) camouflaged against beech tree trunk. UK

Piper Mackay / Great Potoo (Nyctibius grandis) camouflaged against the trunk of a tree, sleeping during day. Pantanal, Brazil.

Stephen Dalton / Garden spider {Araneus diadematus} constructing its orb web, UK, Sequence 3/5, The temporary spirals are in place, now the spider is constructing the main spirals, removing the temporary spirals on th...

Stephen Dalton / Garden spider {Araneus diadematus} constructing its orb web, UK, Sequence 4/5, The temporary spirals are in place, now the spider is constructing the main spirals, removing the temporary spirals on th...