Swimfins, swim fins, fins or flippers are worn on the foot or leg and made from finlike rubber or plastic, to aid movement through the water in water sports activities such as swimming, bodyboarding, bodysurfing, kneeboarding, riverboarding, and various types of underwater diving. Scuba divers use fins to move through water efficiently, as human feet being very small provide relatively poor thrust, especially when the diver is carrying equipment that increases hydrodynamic drag. Very long fins and monofins are used by freedivers as a means of underwater propulsion that does not require high frequency leg movement. Wikipedia [ - ]

Swimfins, swim fins, fins or flippers are worn on the foot or leg and made from finlike rubber... [ + ]