Modern problems of studying cephalopods . Morphology, Systematics, Evolution, Ecology and Biostratigraphy . Issue 2, prepared by the team of authors, is a unique contribution to the study of one of the most mysterious and diverse groups of marine organisms. Galloped mollusks, which include octopuses, squid and cuttlefish, attract the attention of scientists and nature lovers due to their amazing morphology, complex behavioral reactions and importance in the ecosystems of the oceans. This book is a continuation of the first issue and delves into current issues concerning the morphology and systematics of cephalopods. The authors, including well-known experts in the field of biology and ecology, offer the reader not only theoretical knowledge, but also practical aspects based on the latest research. Readers will be able to learn about the latest methods of studying these amazing creatures, including molecular genetic approaches and modern imaging technologies. The book will be of interest to a wide range of readers: from undergraduate and graduate students of biological and environmental specialties to professional biologists and environmentalists, as well as anyone interested in marine biology and ecosystems. It will become an indispensable source of information for those who want to deepen their knowledge about cephalopods and their role in the marine environment. Also, this publication can attract the attention of nature lovers and scientific enthusiasts who want to expand their horizons in the study of marine organisms. The topics covered in the book cover a wide range of issues, ranging from morphological features to environmental aspects of the existence of cephalopods. The authors raise important questions regarding the adaptation of these organisms to changing environmental conditions, their evolutionary development and interaction with other species. The book also addresses the conservation and sustainable use of resources associated with cephalopods, making it particularly relevant in light of contemporary environmental challenges. The style of the authors is characterized by scientific rigor and accessibility of the presentation, which allows the reader to easily assimilate complex concepts. Each section of the book is accompanied by illustrations and tables that help to better understand the material presented. It is important to note that the team of authors includes both experienced scientists and young researchers, which gives the work freshness and novelty. The book "Modern problems of studying cephalopods" is not only a scientific work, but also a real guide to the world of amazing sea creatures. It opens the door to a mysterious ocean where cephalopods play a key role in maintaining marine balance. This edition will be an important addition to the library of anyone interested in marine biology, ecology and the systematics of living organisms. If you are looking for a deep and fascinating reading about cephalopods, their morphology, evolution and ecology, this edition should definitely take its rightful place on your bookshelf. Do not miss the opportunity to immerse yourself in the world of science and discover new horizons, studying the "Modern problems of studying cephalopods"