culebra viperina natrix maura resting.

angst animal aquatic background bank caaplusmn cañas ciudades closeup colours conservation creature culebra enviroment european fauna field herpetology horizontal lagoon lake las macro maura natix natrix natural nature navarra navarre portrait predator publos reptile reptiles reptilia resting river rock science snake soft spain vertebrados viperina viperine water wild wildlife zoology