The locality is situated in the fluvial-marine sector of Danube Delta. This sector is characterized by a predominance of marine sand banks which are perpendicular or oblique given those fluvial.

Sfântu Gheorghe branch, the oldest Danube branch, had an important role in the Danube Delta forming process. In the Sfântu Gheorghe branch coterminous zone, the commune territory is crossed by numerous channels and streams.

From the vegetation point of view, the landscape between the sand bank Caraorman, Sulina branch and Sfântu Gheorghe branch presents itself like a reed sea with some relatively large puddles which surfaces are yearly decreasing because of the new formed floating reed islets. The zone is characterized by reed thicket vegetation. The aquatic floating and submerse vegetation is present too.

Local fauna is dominated by species of birds (3.6% of world avifauna). In correlation with the natural conditions, terrestrial animals, aquatic animals and animals specific for the easily flooded land are present.

The climate is temperate continental with marine influences. Air temperature and precipitations quantity are moderated. The year average temperature is 11°C and the average quantity of precipitations is 400 mm/year. Winter comes late and it is relatively warm. Spring comes 2-3 weeks later than inside the country. The air relative humidity is permanently very high, due to the sea proximity and evaporation from the aquatic surfaces. Long periods of dryness are specific to this region. Snow is rare. The mist is a characteristic phenomenon too. It comes from the sea, especially in wintertime.