Grass snake (Natrix natrix)

On our walk on Easter Sunday we met a nice lady, who informed us, that a bit the beach further down within a pile of rocks there was a bunch of grass snake (Natrix natrix).
After a little search we found them and it was really exciting to observe them moving back and fourth between the stone :-)
It was a little difficult to count them, since most of them were hiding, but I guess it might have been about a dozen of them.