Free style, i think.
The breast stroke
crawl
There are four strokes; Breast stroke, Butterfly, Freestyle and Back Stroke
they swim by moving there tail side to side, to help them swim
i think they swim butterfly, since they move in a wave-like motion.
Breaststroke Breaststroke
The oldest is believed to be the breaststroke.
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.
Momentary rest period for the swimmer.
Freestyle breastroke backstroke and butterfly
Yes. platypuses swim on their front. They do not swim on their side or their back, but they make hundreds of dives each day, and swim forwards on their abdomen.