A wild beach of shell-strewn sand at the village of Vadu, inside the Danube Delta Biosphere Reserve: low dunes, not a single building and an earth track down to the sea.
The last wild beach at the southern edge of the Danube Delta Biosphere Reserve: shell-strewn sand, dunes and a low earth cliff, with no hotels, sunbeds or lifeguards.
The only marine reserve on the Romanian coast: the waters between 2 Mai and the Bulgarian border, with stone reefs, brown seaweed beds and mussel banks to see with a mask or on a dive.
The only marine dunes left on the Romanian coast, protected since 1939 in the grounds of the Agigea Marine Biological Station: rare sand plants, tortoises and a free themed trail.
Romania's largest salt lake, a former sea bay next to Eforie: cold mud baths on the Techirghiol shore in summer, flocks of rare birds on water that does not freeze in winter.
A 98-hectare former lagoon between Saturn and Venus, with reed beds, open water and sulphur springs where swans, egrets and black-winged stilts stop over; you watch it from the surrounding roads.