Intensive connection to nature, absolute silence and the search for harmony with oneself are the reasons for many divers to dive free. The goal: To dive deeper, longer and further and to redefine their own limits. This manual offers a basic introduction to all important aspects of freediving. Christian Redl informs about the necessary equipment, safety precautions as well as breathing and relaxation techniques and introduces the disciplines of time, distance and deep diving. Thus the author opens a fascinating new discipline for interested divers and snorkelers.