The book "Optical Properties and Remote Sensing of Multicomponent Water Bodies" by Helgi Arst provides a comprehensive analysis of the optical properties and remote sensing of turbid and surface-polluted waters, particularly in the Baltic Sea regions. In four detailed chapters, it addresses the challenges and findings related to the study of optically active substances in water. The author compares remote sensing data with data from the analysis of clean waters and highlights the variability and concentration of these substances. The chapters cover topics such as the impact of oil layers on the reflection and absorption of solar radiation, the investigation of water transparency, and the optical classification of turbid waters. The book concludes with a discussion of the results and offers valuable insights into the complex interactions between light and water.