Sven Zacek / Fritillary butterfly (Melitaea sp.) – either Heath or False Heath – at rest on a grass stem. Estonia, Europe, June.

Sven Zacek / Small herd of Roe Deer (Capreolus capreolus) looking back at the photographer against forested background. Virumaa, Estonia, Europe, February.

Nuno Sa / Blue Shark (Prionace glauca) near sea surface and divers in background. Santa Maria, Azores, September.

Rolf Nussbaumer / Jumping Spider (Salticidae) perched on Bigtooth Maple leaf (Acer grandidentatum). Lost Maples State Park, Hill Country, Central Texas, USA, November.

Sven Zacek / Roe deer (Capreolus capreolus) in foreground with second deer on horizon in snow, Estonia, December. Highly commened in CREATIVE VISIONS OF NATURE category, 2011 WILDLIFE PHOTOGRAPHER OF THE YEAR COM...

Ernie Janes / Jack russell terrier in box with Christmas tree

Ernie Janes / Jack russell terrier in wheelbarrow with apples, UK

Jeff Rotman / Close up of Goggle eye / Bigeye fish (Priacanthus hamrur) Red Sea, Egypt

Andy Rouse / Polar Bear (Ursus maritimus) about to enter water, Svalbard, Norway, September 2009. Image 01262546 is cropped from this frame

Tony Heald / Hippopotamus at water surface. Kruger NP, South Africa

David Pike / Gelada baboon lip flip display (uncertainty) {Theropithecus gelada} Simien mtn NP, Ethiopia

Anup Shah / Blue Monkey (Cercopithecus mitis) male, named Bagi, puckering his mouth as a sign of uncertainty, Kakamega Forest Reserve, Kenya