The term "Apnoea" designates a sports event where the athlete holds his breath keeping the face below the surface of the water. Free diving is a technique used in various aquatic activities. While in general all aquatic activities that include breath-hold diving might be classified as a part of free diving, some sports are better established than others. Examples of recognized freex diving activities are (non-) competitive free diving, (non-) competitive spear fishing and free diving photography. Less recognised examples of free diving include, but are not limited to, synchronised swimming, underwater rugby, underwater hockey, underwater target shooting, underwater hunting other than spear fishing, and snorkelling. The discussion remains whether free diving is only a synonym for breath-hold diving or whether it describes a specific group of underwater activities. Free diving is often strongly associated with competitive breath-hold diving or Competitive Apnoea.