Mangrove forest dominates the low-energy intertidal zones of lagoons, estuaries, and coastal systems in the tropics, subtropics, and along some temperate coast. There have been warnings that supportive data have not been collected and that fish and decapods use of mangroves may not be the same in all areas of the globe. Data available on brackish water ecosystems are limited to lagoons and estuarine portions of a few rivers. Therefore, this book on hydrobiological survey provides information on the physical, chemical and faunal characteristics of Buguma Creek, a mangrove creek in the Niger Delta, Nigeria which could be utilized in some management consideration and in planning of more detailed hydrobiological investigations for other tidal creeks, or brackish water ecosystems. The Book will be useful for professionals in hydrology; plankton, macrobenthic, and fish ecology of brackish water ecosystems.