frog in water. breeding male pool frog pelophylax lessonae is croaking with vocal sacs in the pond at lausanne, switzerland.

adult amphibian animal aquatic background behavior biodiversity black blakground blotches bodypart breeding brown call calling close color copyspace croaking cute ecology edible environment environmental esculenta esculentus european eyes frog grass green head lausanne leaf lessonae looking macro macrophotography male marsh natural nature nobody outdoor outdoors part pelophylax plant pond pool poolfrog poollife protection resting river sac spring springtime standing sustainable swimming switzerland two vegetation vocalsac water waterplant wild wildlife