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Swimfins, swim fins, diving fins, or flippers are finlike accessories worn on the feet, legs or hands [1] and made from rubber, plastic, carbon fiber or combinations of these materials, to aid movement through the water in water sports activities such as swimming, bodyboarding, bodysurfing, float-tube fishing, kneeboarding, riverboarding, scuba diving, snorkeling, spearfishing, underwater ...
Surface finswimming (also known by its acronym, SF) is swimming on the surface of the water using mask, snorkel, and monofins.SF races are held for distances of 50, 100, 200, 400, 800, 1500, 4 × 50 mix relays (2 men's, 2 women's), 4 × 100 relays and 4 × 200 relays (meters) in swimming pools and over various long distances in the open water environment.
A freediver using a monofin Herbert Nitsch wearing a monofin at the Cyprus BIOS 2004 Freediving Open Classic. A monofin is a type of swimfin typically used in underwater sports such as finswimming, free-diving and underwater orienteering.
The anal/cloacal fin is located on the ventral surface behind the anus/cloaca. The bones that support the anal fin are called pterygiophores. There are up to two series, a proximal series (axonosts) and a distal series (baseosts) Most fish use their anal fin to stabilize while swimming; Knifefish use their anal fins for thrust (gymnotiform ...
The pectoral fins developed into forelegs (arms in the case of humans) and the pelvic fins developed into hind legs. [50] Much of the genetic machinery that builds a walking limb in a tetrapod is already present in the swimming fin of a fish. [51] [52] Comparison between A) the swimming fin of a lobe-finned fish and B) the walking leg of a ...
This is a fin stroke for maintaining position and attitude at the surface, particularly while waiting for a pickup or taking a compass bearing. The fins are sculled from side to side using opening and closing motions of the legs, and the ankles rotated as best suited to the thrust needed to turn or hold the diver steady.
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Most fish swim by generating undulatory waves that propagate down the body through the caudal fin. This form of undulatory locomotion is termed body-caudal fin (BCF) swimming on the basis of the body structures used; it includes anguilliform, sub-carangiform, carangiform, and thunniform locomotory modes, as well as the oscillatory ostraciiform ...
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