The book "Nutrients and Eutrophication in Estuaries and Coastal Waters" offers a comprehensive analysis of nutrient and organic matter inputs in estuaries and other coastal ecosystems. It examines the effects of these inputs on the geochemistry and community structure of the affected ecosystems, as well as the possibilities for restoring a trophic state that is beneficial for both humans and nature. Through numerous examples, it illustrates how the increased supply of nutrients and organic matter affects the chemical properties of water, as well as the structure, metabolism, and trophic pathways of biological communities. The book also includes several case studies that provide valuable insights into the responses of various coastal ecosystems to long-term changes in the trophic state of the water. Additionally, it addresses current knowledge about modeling as a tool for managing the trophic state of coastal ecosystems, making the book of interest to scientists, students, and managers.