Colin Varndell / Grass snake (Natrix natrix) Dorset, UK May

Matthew Maran / Grass snake (Natrix natrix) flicking tongue, Hampstead Heath, London, England, UK, August.

Luis Quinta / Grass snake (Natrix natrix) juvenile playing dead, Alvao, Portugal, April.

Luis Quinta / Grass snake (Natrix natrix) swimming in river, Olo, Alvao, Portugal, June.

Daniel Heuclin / Sand Viper (Cerastes vipera) in shade of grass, Erg Chigaga, Morocco

Danny Green / Grass Snake (Natrix natrix) on lily pad, reflected in water. Leicestershire, UK, October.

Sven Zacek / Grass Snake (Natrix natrix) looking out from between wood slats. Estonia, Europe, June.

Robin Chittenden / Grass snake (Natrix natrix) swimming at surface, Dobrogea Tulcea, Danube Delta, Romania, May

Terry Whittaker / 2020VISION / Grass snake (Natrix natrix) swimming through water, Wicken Fen, Cambridgeshire, UK, June

Danny Green / 2020VISION / Grass Snake (Natrix natrix) coiled, basking, Staffordshire, England, UK, April

Danny Green / 2020VISION / Grass Snake (Natrix natrix) portrait, Staffordshire, England, UK, April

Solvin Zankl / Grass snake (Natrix natrix) head portrait flicking tongue