Moeraki Boulders, New Zealand http://www.travelandtransitions.com/destinations/destination-advice/australia-south-pacific/travel-new-zealand-auckland-christchurch-wellington-the-southern-alps-and-lots-of-beautiful-nature/
These balls in the mist are Moeraki Boulders at the Koekohe Beach on the Otago coast of New Zealand. They are truly strange: gigantic (up to three meters), some almost perfectly spherical in shape, with a crystal-filled hollow interior... resembling a discarded shell, a gigantic pod waiting to hatch, or a husk that's already hatched.
The Moeraki Boulders are a big attraction, found on Koekohe Beach near Moeraki on New Zealand’s coast. The huge, gray, spherical stones formed in sediment on the sea floor 60 million years ago and were revealed by shoreline erosion.