Freediving consists of diving at great depths (dynamic apnea) or for as long as possible (static apnea) without the need for autonomous breathing equipment as in scuba diving.


This modality involves some risks to consider since the body is subjected to extreme pressures, compressing the gases and with it the volume of the lungs.

In addition to the disadvantages that these pressures entail in Freediving, there is the risk of having an accident due to hypoxia, especially in the ascent, since during the last meters of ascent the total pressure decreases rapidly and with it the partial pressure of oxygen, which may result in a loss of consciousness (Black Out).

However, there are many people who practice this water sport, getting marks of up to 300m deep in dynamic apneas (with fins) or more than 10 minutes of static apneas .

Freediving requires some techniques and physical training as in any other sport, but it also requires mental training and discipline:


  • Maintain a correct feeding.
  • Perform anaerobic exercise.
  • Encourage the mammal immersion reflex
  • Apnea training on the ground.
  • Hydration also plays an important role.


  • To maintain a state of relaxation during the whole dive.
  • Reduce heart rate.
  • Increase lung capacity.

All this translates into more time under water and greater safety for the freediver.

Freediving and spearfishing

Freediving is the basis of spearfishing, an activity that has seen an important boom in recent decades.

Underwater fishing is all that in which the fisherman must submerge to practice fishing, unlike sport fishing, in which we should not practice any type of immersion in water.

There are several types of underwater fishing with less or greater difficulty and depending on our lung capacity, such as fishing to the fall, where we spot from surface, or fishing waiting, in which we wait from the bottom and that requires a greater lung capacity.