Steve Downer / Grove snail / brown lipped snail (Cepaea nemoralis) with juvenile riding on its back, Birmingham UK June.

Steve Downer / Garden cross spider (Aranea diadematus) juvenile spiderling making web, UK.

Steve Downer / Yellow slug (Limax flavus) back lit embryo moving around in egg case.

Steve Downer / Honey bee (Apis mellifera) fast motion of bee collecting pollen from begonia flower and flying lies off. Birmingham UK. September.

Steve Downer / Slug (Species unknown) descending on slime rope from leaf. UK. June.

Steve Downer / Yellow slug (Limax maximus) moving across bridge over road with traffic in the background. Birmingham, UK. June.

Steve Downer / Black arion slug (Arion ater) moving, viewed from beneath showing ripples or pedal waves used for locomotion.

Steve Downer / Fruit fly (Drosophila melanogaster) close-up of eye.

John Cancalosi / Female Timber rattlesnake (Crotalus horridus) at nest site with newborn young, Pennsylvania, USA, September.

Doug Perrine / Female Hawaiian monk seal (Monachus schauinslandi) defending her pup from two males, which are aggressive with each other, Molokai Island, Hawaii, USA.

Doug Perrine / Female Hawaiian monk seal (Monachus schauinslandi) fighting with a male trying to mate with her, Molokai Island, Hawaii, USA.

Ammonite / Honey bees (Apis mellifera) entering and exiting hive, France, July.