The purpose of the book is to link together knowledge obtained in the observation of mud volcanism and local seismicity. Geological, Seismological, Geophysical and Geochemical parameters are considered. The book represents the modern state of the art after many decades of observations. The book fills an editorial gap and improves knowledge in the fields of natural risks and energy resources. Mud volcanism occurs both onshore and offshore in many places of the world. Mud volcanic phenomena have been to date described by local monographs or by articles published in scientific journals and no books were published on topics highlighting the link between mud volcanism, geodynamics and seismicity. Mud volcanism has been recognized to be generally related to hydrocarbon deposits, seismotectonic activity and to orogenic belts. In spite of the large amount of data collected by scientists working in different disciplines - geophysics, geochemistry, structural geology, marine geology, hydrocarbon geosciences etc., a comprehensive and complete understanding of mud volcanic phenomena is hard to find in current scientific literature. Finally a book that presents up-to-date knowledge breaking traditional disciplinary walls.