Accessories
What gear helps swimmers see underwater?
Human swimming
 Ear plugs can prevent water from getting in the ears.  Noseclips can prevent water from getting in the nose. However, this is generally only used for synchronised swimming. Using noseclips in competitive swimming can cause a disadvantage to most swimmers. It is for this reason that noseclips are only used for synchronised swimming and recreational swimming.  Goggles protect the eyes from chlorinated water, and can improve underwater visibility. Tinted goggles protect the eyes from sunlight that reflects from the bottom of the pool.  Swim caps keep the body streamlined and protect the hair from chlorinated water.  Kickboards are used to keep the upper body afloat while exercising the lower body. Pull buoys are used to keep the lower body afloat while exercising the upper body.  Swimfins are used to elongate the kick and improve technique and speed. Fins also build upper calf muscles.  Safety fencing and equipment is mandatory at public pools and a zoning requirement at most residential pools in the United States.