Jeremy Green's systematic overview of maritime archaeology offers a step-by-step description of this fast-growing field. With new information about the use of computers and Global Positioning Systems, the second edition of this handbook shows how to extract as much information as possible from a site, how to record and document the data, and how to act ethically and responsibly with the artifacts. Treating underwater archaeology as a discipline, the book demonstrates how archaeologists, "looters," academics, and governments interact and how the market for archaeological artifacts creates obstacles and opportunities for these groups. Well illustrated and comprehensive in its approach to the subject, this book provides an essential foundation for everybody interested in underwater environments, submerged land structures, and conditions created by sea level changes.