Bertie Gregory / 2020VISION / Avocet (Recurvirostra avosetta) silhouetted as its feeds at sunrise, Brownsea Island, Dorset, winter.

Stephen Dalton / Water dripping from tip of leaf, UK

Jack Dykinga / Desert varnish coloured canyon walls in Navajo sandstone cliffs showing drip marks across cliff face, Colorado Plateau, Arizona, USA

Jack Dykinga / Lone Ponderosa pine tree {Pinus ponderosa} in front of canyon walls showing drip mark fractures, Long Canyon, Grand Staircase-Escalante National Monumnet, Utah, USA

Neil Aldridge / A drip is fitted to the leg of a young White rhinoceros (Ceratotherium simum) after its translocation from South Africa to Okavango Delta, Botswana. as part of efforts to rebuild Botswana's lost rhino...

Neil Aldridge / A member of the Rhino Conservation Botswana team holds a drip attached to a young White rhinoceros (Ceratotherium simum) while vets provide the young rhino with care after its translocation from South...

Ashley Cooper / Melting ice and snow at on Joinville Island just off the Antarctic Peninsula.

Mark Moffett / Droplets of water dripping off tapered leaves

Alex Hyde / Icicles. UK, January.

Tim Laman / Newly emerged red leaves of a rainforest plant, Bioko Island, Equatorial Guinea, January

Hanne & Jens Eriksen / Drip farming cabbages (Brassica oleracea capitata) Barka, Oman. February 2008

Pete Oxford / Fern frond with drip tips, Mindo Cloud Forest, Ecuador