Swimming

Swimming is movement through water by propelling the body with limbs or body undulations. It can serve as locomotion, exercise, recreation, or competition.

Hydrodynamics: The study of fluids in motion and the forces they exert. Water resistance and flow around the body shape swimming speed and technique.
Breathing (swimming): The timed inhalation and exhalation used to breathe while swimming. Coordinating breaths with strokes is a defining practical challenge in many swimming styles.
Competitive swimming: Racing in water using recognized strokes, distances, and rules. It formalizes swimming into timed events and regulated technique.
Snorkeling: Swimming or floating at the surface while breathing through a snorkel and observing underwater. It uses surface movement chiefly for underwater viewing rather than sustained travel.
Drag (physics): A force that opposes an object's motion through a fluid. Swimmers reduce drag by streamlining their bodies and controlling their movements.
Water confidence: Comfort and control while immersed in or moving through water. Confidence helps beginners float, submerge, and practice movement without panic.
Lifesaving: The practice of preventing drowning and rescuing people in aquatic environments. Swimming enables rescues, though lifesaving also requires specialized judgment and techniques.
Scuba diving: Underwater diving with a self-contained breathing apparatus. Scuba equipment enables submerged exploration beyond ordinary breath-hold swimming.
Buoyancy: The upward force a fluid exerts on an immersed object. Buoyancy supports the swimmer and affects body position at the surface.
Floating: Remaining at or near the surface of a fluid without sinking. Floating establishes body balance before or alongside learning propulsion.

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