Marie Read / Horned Puffin (Fratercula corniculata) flying over a pattern of kelp and sea foam, photographed from above, St. Paul, Pribilof Islands, Alaska, USA. July.

Steve Downer / Juvenile Common frog (Rana temporaria) on back of a Common snail (Cornu aspersum), UK, June.

Steve Downer / Juvenile Common frog (Rana temporaria) on back of a Common snail (Cornu aspersum), UK, June.

Ammonite / Close up of a Common snail (Cornu aspersum) moving, with Woodlice (Oniscidea). Controlled conditions.

Marie Read / Horned puffin (Fratercula corniculata) close-up portrait, St. Paul Island, Pribilofs, Alaska, USA, July.

Marie Read / Horned puffins (Fratercula corniculata), one landing with outspread wings, to join its mate on cliff ledge, St. Paul Island, Pribilofs, Alaska, USA, July.

Chris Mattison / Sidewinder (Crotalus cerstastes) in sand dunes, Anza-Borrego Desert State Park, California, USA, May.

John Cancalosi / Sonoran Desert Sidewinder (Crotalus cerastes) with forked tongue extended, Arizona USA

Michael D. Kern / Mojave Sidewinder rattlesnake with tongue flickering and rattle raised {Crotalus cerastes cerastes} captive from California, USA

Juergen Freund / Trunkfish / Longhorn cowfish {Lactoria cornuta}

Michio Hoshino / Horned Puffin (Fratercula corniculata) group on rocky cliff, Alaska

Stephen Downer / John Downer P / Sidewinder rattlesnake corkscrews along sand, wave of contact points passes along body (Resolution restriction - image digitised from film, 'Weird Nature' tv series)