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
Competitive free diving is currently governed by various associations and one of them is CMAS. Most types of competitive free diving have in common that it is an individual sport based on the best individual achievement. There are currently eleven disciplines in CMAS. All disciplines can be done by both men and women. The disciplines can be done both in competition and as a record attempt. But currently only Dynamic with Fins and Jump Blue Apnoea has got approved rules for championships and Constant Weight Apnoea for record attempts. The commission has done the draft rules for other disciplines and those are to be finished t the next commission meeting.