bather

noun bather

• swimmer — to move in water by movements of the limbs, fins, tail, etc.
• skinny-dip — to swim in the nude.
• diver — a person or thing that dives.
• snorkel — Also called, British, snort. a device permitting a submarine to remain submerged for prolonged periods, consisting of tubes extended above the surface of the water to take in air for the diesel engine and for general ventilation and to discharge exhaust gases and foul air.
• paddler — a short, flat bladed oar for propelling and steering a canoe or small boat, usually held by both hands and moved more or less through a vertical arc.