Nothing more wonderous than nature itself!
Danke für diese schöne Information!
Nature is awesome, that's all one can say. :) I remember finding stones like this when I was little and was very intrigued by them, wondering how they came to be like that... Well, now I know!
I have some rocks/shells that have tiny holes and I thought they were coral but they are old shells that have been inhabited by tiny worms, so interesting.
I was two weeks ago to the Ostsee and there I found some "Hühnergötter" - stones with a hole. I have only made one photo: http://www.flickr.com/photos/karlaavienna/4690386268/here you can read something about "Hühnergötter":http://de.wikipedia.org/wiki/H%C3%BChnergottliebe grüsse, regine
Danke Regine! hab mir die Hühnergötter angeschaut, sehr interessant!