Ingo Arndt / Slug caterpillar moth larva mimics bug {Limacodidae} Guanacaste, Costa Rica

Ole Jorgen Liodden / Ivory gull (Pagophila eburnea) behind Polar bear (Ursus maritimus), Svalbard, Norway, July.

Andrew Parkinson / Coots (Fulica atra) resting at dawn. Derbyshire, UK, March.

Kevin Schafer / Southern / Double-wattled cassowary (Casuarius casuarius) wild, adult male rear view, Atherton Tablelands, Queensland, Australia, November

Alex Mustard / A parasitic isopod attached to a Leafy Seadragon (Phycodurus eques). This species of isopod has an ornately shaped carapace to disguise it on the seadragon. Wool Bay Jetty, Edithburgh, Yorke Peninsula...

Alex Mustard / A shoal of Ornate Ghost Pipefish (Solenostomus paradoxus) below a black coral bush (Antipathes sp.). Misool, Raja Ampat, West Papua, Indonesia, November.

Kristel Richard / Two riders on horses (Equus caballus) from the Gremio di Falegnamii, dressed in traditional costume, parade before the start of the Sartiglia (race to the star) in Oristano, Sardinia, Italy. February...

Kristel Richard / Portrait of a masked rider on a horse (Equus caballus) from the Gremio di Falegnami parades before the start of the 'Sartiglia' (race to the star) in Oristano, Sardinia, Italy. February 2010

Duncan Mcewan / Brussels Lace Moth caterpillar on lichen covered oak twig. Scotland, UK

RACHEL HINGLEY / Peppered moth (Biston betularia) Monkwood NR Near Worcester

PREMAPHOTOS / Decoy spider female camouflaged in web (Cyclosa insulana) Sumatra

Alex Mustard / Sleepy sponge crab (Dromia dormia) climbing over a rock, carrying its sea squirt (Didemnum molle) disguise, with brittlestar. Anilao, Batangas marine protected area, Luzon, Philippines. Verde Island P...