Shell with prominent spire; distant from right tentacle, generally appendiculated; brackish water or fluviatile.
Its surroundings are bleak and sterile and its waters brackish and polluted with the drainage of the neighbouring city for nearly four centuries.
In the brackish waters of the east coast sea fish are found, together with pike, perch and other fresh-water forms. The crayfish is common in many places in central and southern Sweden.
Between Hatteras and Lookout is Raleigh Bay and between Lookout and Fear is Onslow Bay; and between the chain of islands and the deeply indented mainland Currituck, Albemarle, Pamlico and other sounds form an extensive area, especially to the northward, of shallow, brackish and almost tideless water.