Finswimming, sometimes dubbed as ‘formula one swimming’, is a form of swimming utilising a variety of fins, including stereofins (flippers) and monofins.  These fins enable the finswimmer to move through the water at up to 50% faster than with classical swimming.  For example, the current world record for swimming one length of an Olympic sized pool is a spectacularly fast fifteen seconds using a monofin.  Speeds can be further increased through breath-holding, or apnoea, where participants swim for 50m using a monofin entirely submerged and on just one breath of air.