Dynamic apnea
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Dynamic Apnea covers two of the eight categories recognised by the International Association for the Development of Freediving. That of Dynamic Without Fins and Dynamic With Fins. Both disciplines require breath held dives where the diver travels in a horizontal position under water under their own power without aid/physical contact of a static surface, with the exception of the pool wall when done indoors. The records can only be recognised in pools of 25m or greater.
The other categories recognised are: static Apnea, No Limit, Variable Weight, Free Immersion, Constant Weight, Constant Weight Without Fins,
[edit] Sources
AIDA - Association Internationale Pour Le Developpment De L'Apnee