Chalk Reefs


The history of the Rügen chalk coast began almost 70 million years ago. When dinosaurs still walked the earth, another large, shallow sea existed here, at the site of today’s Baltic Sea. Shell-forming algae, foraminifers and ostracods sank to the sea floor after their death to form today’s unmistakable layers of chalk, in places measuring up to 700 metres thick.
These mountain-like chalk reefs off Cape Arkona also fascinate recreational divers. Here, amongst the deep canyons and mussel-covered rocks teeming with countless flatfish, lumpfish and sea urchins – we find sunken settlements and other artefacts from long forgotten cultures.

Selection Sphere Chalk Reefs Seagrass Beds Drop Offs Rocky Reefs Shipwreck NABU (Nature and Biodiversity Conservation Union)