Ammonite / Close-up of a Yellow slug (Limax flavus) moving towards the camera leaving a slime trail and extending and retracting its eyestalk, footage taken using an endoscopic camera, Bristol, England, UK, Marc...

Ammonite / Close-up of a Yellow slug (Limax flavus) leaving a slime trail as it moves, footage taken using an endoscopic camera, Bristol, England, UK, March.

John Cancalosi / Male Western diamondback rattlesnake (Crotalus atrox) courting female, Sonoran Desert, Arizona, USA. Sequence 3/3.