Constant Weight No Fins

This is arguably the most athletic of all freediving disciplines. The diver must complete the dive without the use of fins or by pulling on a rope. The technique employed is usually a form of breaststroke action – pulling with the arms and kicking with the legs. As with constant weight and free immersion, the freediver cannot change his ballast during the dive.

In short: Swimming down and back up, without using fins.

AIDA Records

History of UK records