Such are the various coast lagoons, formed at the mouths of streams ' See A.
Logwood forests fringe all the lagoons and many parts of the seaboard, which are flooded during the rainy season.
South of the Bermejo the land is more elevated and drier, though large depressions covered with marshy lagoons are to be found, similar to those farther north.
Before its annexation by Germany the lagoons were a favourite resort of slavers, and stations were established there by Portuguese, British, French and German traders.
Besides the delta of the Po and the large marshy tracts which it forms, there exist on both sides of it extensive lagoons of salt water, generally separated from the Adriatic by narrow strips of sand or embankments, partly natural and partly artificial, but havin openings which admit the influx and efflux of the sea-water, and serve as ports for communication with the mainland.