Free style, i think.
The breast stroke
crawl
There are four strokes; Breast stroke, Butterfly, Freestyle and Back Stroke
Breaststroke Breaststroke
The oldest is believed to be the breaststroke.
i think they swim butterfly, since they move in a wave-like motion.
they swim by moving there tail side to side, to help them swim
Be a druid. Swim like a seal.
The breast stroke is a healthy active swim and is a good all round swimming stroke. It is very excellent exercise.
Freestyle breastroke backstroke and butterfly
Momentary rest period for the swimmer.
That depends on your stroke rate, and on the size of your arms.