Many thousands of Americans in such cities as Miami, New Orleans, Galveston, and Corpus Christi live near an estuary, one of nature's most intriguing ecosystems. But the same citizens who depend on a neighboring estuary for fresh shrimp or who visit it on a Sunday outing often know little about the physical makeup of estuaries and their contributions to the quality of human life. In this comprehensive study, Robert Stickney examines the physical, chemical, geological, and biological characteristics of estuaries, coastal regions where fresh water and seawater intermingle. This book, the first to bring together data on estuarine ecology in the region of interest, will provide a benchmark for future studies of estuaries and their mysteries and will be invaluable to aquatic ecologists, nonbiological oceanographers and limnologists, and interested laymen. Its storehouse of technical information will assure it a continuing place in the literature of estuarine ecology.