The Book of Shells is handy field guide for the recreational shell collector, naturalist and students, its provides information for shell collection, preservation, identification key with color photograph, classification, importance and conservation of more than 145 species of common gastropods and bivalves which includes 32 archaeogastropods, 49 mesogastropods, 34 neogastropods and 30 bivalves available from Tamil Nadu coast including Gulf of Mannar region, Southeast coast of India, I am sure that the book will be a constructive field guide for graduate and post-graduate students of Marine Sciences.