Here are the different disciplines of which the world records are controlled by AIDA International.
This is probably the most popular of the freediving disciplines. The diver simply swims down the line using fins or monofin. He is allowed to touch the line only at the bottom of the line to initiate his swim back. Why « constant weight » ? Simply because the weight the diver decides to wear, needs to come back to the surface ! Unlike in the variable weight discipline, described below.
CONSTANT WEIGHT NO FINS
The same rules apply to this very pure but difficult freediving discipline. No change of weights, no touching of the line except to initiate the turn. On top of that, the diver is not allowed to wear any propulsive equipment ! The purest of all free dives : just the sea and your body !
When learning the sport of breath-hold diving, this is the best discipline to start with. The diver pulls himself down and up the line without the help of fins. This is a very relaxing discipline because there is no need to concentrate on kicking or swimming technique.
Variable weight is the exact opposite as the constant weight discipline described above. The weight the diver takes down is left on the bottom to make the return with fins or on the line easier. Usually free divers sit on a weighted sled that pulls them down before the swim back.
The words NO-LIMITS mean everything : Do whatever you want to get down and back ! In this « extreme » discipline of freediving the diver sits on a weighted sled to be pulled under and heads back to the surface with an inflated lift bag or any other device.
DYNAMIC NO FINS
Everyone has certainly tried to swim as far as possible under the water in the swimming pool. This is exactly what dynamic no fins is ! Covering the longest possible horizontal distance without the use of fins on a single breath.
For this discipline, the freediver wears fins or monofin and covers the longest possible horizontal distance whilst holding the breath.
Static is considered as the most challenging disciple mentally speaking. The diver holds his breath as long as possible without moving with his airways submerged. For beginners, static may be tricky because you « don’t do anything ». But once some experience is acquired, this is actually a very relaxing way to practice the sport of freediving.
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