The book “Biology of the seas of the USSR” by Lev Alexandrovich Zenkevich is an outstanding scientific work that immerses the reader in the fascinating and mysterious world of marine biology. Published in the mid-20th century, this work has become not only an important contribution to the study of marine ecosystems, but also a real guide for everyone interested in the life of the oceans and seas, as well as their inhabitants. Zenkevich, as one of the leading Soviet biologists, with deep understanding and passion describes the diversity of marine organisms, their behavior, environmental interactions and adaptation to living conditions. The book covers a wide range of topics, including marine ecosystems, biogeography, physiology and ecology of marine organisms, making it not only a scientific but also a cultural heritage. The reader will be able to learn about how different species of fish, molluscs and other sea creatures interact with each other and with the environment, how they survive in conditions, sometimes extremely complex and volatile. This book will be of interest to both undergraduate and graduate students of biological and environmental specialties, as well as nature lovers who want to understand more deeply how the underwater world works. It is suitable for readers of different ages, from high school students to adults seeking to expand their knowledge of marine biology and ecology. If you have ever thought about how marine ecosystems are arranged or what secrets hide the depths of the oceans, the Biology of the Seas of the USSR will be a real discovery for you. Zenkevich not only shares scientific facts, but also creates vivid images that allow the reader to visualize the underwater world. His writing style is characterized by accessibility and fascination, which makes even the most complex topics understandable and interesting. This quality makes the book particularly valuable to a wide audience, including those without a special background in biology. The topics raised in the book are still relevant today. In the face of global climate change and ocean pollution, understanding marine ecosystems is becoming critical. Zenkevich raises issues of biodiversity conservation, sustainable use of marine resources and protection of the marine environment. Readers interested in ecology and environmental protection will find in this book many ideas and inspirations for further study and action. Lev Aleksandrovich Zenkevich is not only the author of the "Biology of the Seas of the USSR", but also the author of many other works devoted to marine biology and ecology. His research and publications have made him one of the most respected scientists in the field. By reading his books, you will be able to follow the development of scientific thought and understand how views on marine biology have changed over the decades. If you're interested in books like John B's Marine Biology Kerry, “Ocean” by David Attenborough, or “Life in the Ocean” by Richard Hawkins, the “Biology of the Seas of the USSR” will be for you not only a logical continuation, but also a real find. This book is not just a textbook, but an exciting journey into a world that is hidden from the eyes of most people, but which is full of wonders and secrets. Thus, the "Biology of the seas of the USSR" is not just a book about marine biology, but a real encyclopedia that can awaken interest in science and inspire the study of the underwater world. Do not miss the opportunity to touch this unique work and discover the amazing world of the seas and oceans!