Sylvain Cordier / Polar bear (Ursus maritimus), female with two cubs, on a barrier island outside Kaktovik, Alaska, USA.

Theo Bosboom / Common blue damselfly (Enallagma cyathigerum) trapped in Sundew plant (Drosera), Hondenven, Tubbergen, the Netherlands, August ,

Alex Hyde / Round-leaved sundew (Drosera rotundifolia) backlit at sunset. Isle of Mull, Scotland. June. Highly commended in the Botanical Britain Category of the British Widllife Photography Awards (BWPA) Competi...

Krista Schlyer / Hooded pitcher plant (Sarracenia minor) Green Swamp, North Carolina, USA. June.

Krista Schlyer / Yellow pitcher (Sarracenia flava) plants in bog, growing in fire-maintained landscape, Conecuh National Forest, Alabama, USA. May 2014.

Krista Schlyer / Green lynx spider (Peucetia viridans) on Yellow pitcher plant (Sarracenia flava) Green Swamp, North Carolina, USA. September.

Enrique Lopez-Tapia / Pitcher plant (Nepenthes vieillaedii) Blue River Provincial Park / Parc Provincial de la Riviere Bleue, New Caledonia.

Adrian Davies / Cape Sundew (Drosera capensis) with captured fly. Note how leaf has rolled over the prey.

Chien Lee / Hardwicke's Woolly Bat (Kerivoula hardwickii) arriving at Pitcher Plant (Nepenthes hemsleyana) pitcher to roost, Brunei

Chris Mattison / Common wasp (Vespa vulgaris) caught in a Venus flytrap (Dionaea muscipula), cultivated, occurs in North America

Alex Hyde / Cape sundew (Drosera capensis) close-up of sticky droplets on leaf hairs that trap invertebrate prey, originating from South Africa.

Bert Willaert / Great Sundew (Drosera anglica) peduncles, with sticky droplets to ensnare insects. Belarus, Europe, July.