an active diversion requiring physical exertion and competition

the act of swimming

the sport of riding a surfboard toward the shore on the crest of a wave

skiing on water while being towed by a motorboat

propel oneself through the water in a finning motion

swim like a dog in shallow water

swim by doing the crawl

swim with the face down and extend the arms forward and outward while kicking with the leg

swim on one's back