The book "Mangrove Horseshoe Crab: Ecology and Conservation" by Swati Das is a comprehensive guide to the study of the Mangrove Horseshoe Crab Carcinoscorpius rotundicauda, found along the upper east coast of India. The book covers various aspects of the ecology and conservation of this unique marine species, including its distribution, habitat, feeding behavior, reproductive biology, and conservation status. The author provides a detailed description of the anatomy and physiology of the Mangrove Horseshoe Crab, as well as its ecological role in the mangrove ecosystem. The book also discusses the various threats to the survival of the species, including habitat destruction, pollution, and overexploitation for food and medicine. The main focus of the book, however, is the conservation of the Mangrove Horseshoe Crab. The author provides practical advice for conservation efforts, including the establishment of protected areas, community-based conservation initiatives, and the development of sustainable fishing practices. The book also covers the role of education and awareness-raising in promoting the conservation of this important species. Overall, "Mangrove Horseshoe Crab: Ecology and Conservation" is a valuable resource for anyone interested in the study and conservation of marine species. The book provides a comprehensive overview of the ecology and conservation of the Mangrove Horseshoe Crab, as well as practical advice for conservation efforts. The author's passion for the species and dedication to its conservation shines through in every page of the book.