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Several swimming styles are suitable for recreational swimming; most recreational swimmers prefer a style that keeps their head out of the water and with an underwater arm recovery. Breaststroke, side stroke, and dog paddle, are the mon strokes utilized in recreational swimming, but the out-of-water arm recovery of freestyle or Butterfly gives rise to better exploitation of the difference in resistance between air and water.

Butterfly stroke, which consists of out-of-water recovery with even symmetry in body movements, is most suited to rough water swimming. For example, in a record-setting example of endurance swimming, Vicki Keith crossed the rough waters of Lake Ontario using butterfly.

Most recreational swimming takes place in pools, where the water is calm. Therefore freestyle which does not work as well in rough water is suitable.

Venues for recreational swimming are swimming pools, beaches, lakes, swimming holes, creeks, rivers, and sometimes canals. Some occupations require the workers to swim.

For example, abalone divers or pearl divers swim and dive to obtain an economic benefit, as do spear fishermen. Swimming is used to rescue other swimmers in distress.

There are a number of specialized swimming styles specially for rescue purposes see List of swimming styles. Such techniques are studied by lifeguards or members of the Coast Guard.

The training of these techniques has also evolved petitions such as surf lifesaving. Swimming is also used in marine biology to observe plants and animals in their natural habitat.

Other sciences use swimming, for example Konrad Lorenz swam with geese as part of his studies of animal behavior. Swimming also has military purposes.

A swimmer in the water or under the water can be difficult to detect, especially at night. Military swimming is usually done by Special forces, such as Navy SEALS.

Swimming is used to approach a location, gather intelligence, sabotage bat, and to depart a location. This may also include airborne insertion into water or leaving a submerged submarine through a hatch or the torpedo tubes.

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