Albermarle Sound and the Great Dismal Swamp, USA – June 21st, 200934.6N 77W
Albemarle Sound is a large estuary on the coast of North Carolina in the United States located at the confluence of a group of rivers, including the Chowan and Roanoke.
It is separated from the Atlantic Ocean by the Outer Banks, a long barrier peninsula. Much of the water in the Albemarle Sound is brackish or fresh, as opposed to the saltwater of the ocean, as a result of river water pouring into the sound.
Here, the water of the sound appears dark blue and mostly clear of sediments. The waters of the Chesapeake Bay (partially visible, above) and the Pamlico Sound (partially visible, below), on the other hand, have a green tinge.
Inland, between Albemarle Sound and Chesapeake Bay, is the Great Dismal Swamp, a marshy region on the Coastal Plain of southeastern Virginia and northeastern North Carolina.
The dark blue circular area in its center is Lake Drummond, with a surface area of approximately 3,142 acres (13 km2) and a maximum depth of six feet.