Underwater Archaeology: The NAS Guide to Principles and Practice provides a comprehensive summary of the archaeological process as applied in an underwater context. Containing extensive practical advice and information, including how to get involved, basic principles, essential techniques and approaches, project planning and execution, publishing and presenting, this book is essential reading for anyone with an interest in nautical archaeology. Fully illustrated with over 100 drawings and new colour graphics, this second edition includes additional chapters on geophysics, historical research, photography and video, monitoring and maintenance and conservation. With Underwater Archaeology the Nautical Archaeology Society reveals the real underwater treasure - a rich cultural heritage that has helped shape the world in which we live. By outlining the principles and practices, this book will enable the reader to make informed and responsible decisions about how to get the most from their involvement with underwater archaeology.