Neil Aldridge / Two Lady's slipper orchids (Cypripedium calceolus) in flower in spring in woodland near Kuressaare, Saaremaa, Estonia.

Andres M. Dominguez / Mirror orchid (Ophrys speculum) in the Sierra de Grazalema Natural Park, El Bosque, southern Spain, April.

Radomir Jakubowski / Ladys slipper orchid (Cypripedium calceolus), Bavaria, Germany, May. 2nd Prize in the Melvita Nature Images Awards competition 2014.

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

Charlie Summers / The transit of Venus across the face of the sun, with visible sunspots, as seen from Aurora, Colorado, USA, 19.51 local time, 5 June 2012.

MYN / Clay Bolt / Pink lady's slipper orchid (Cypripedium acaule) Pickens County, South Carolina, USA, April. meetyourneighbours.net project

Stephen Dalton / Venus flytrap (Dionaea muscipula) with fly trapped

Stephen Dalton / Fly trapped in Venus flytrap {Dionaea muscipula}

Stephen Dalton / Venus flytrap {Dionaea muscipula} showing trigger hairs for catching flies,

Stephen Dalton / Close up of trap of Venus flytrap {Dionaea muscipula} showing trigger hairs

Wild Wonders of Europe / Benvie / Yellow ladys slipper orchids (Cypripedium calceolus) in flower, Queyras Natural Park, France, May 2009

Wild Wonders of Europe / Benvie / Yellow ladys slipper orchid (Cypripedium calceolus) in flower, France, May 2009