Here are the most influential famous female swimmers throughout history:
1) Sarah “Fanny” Durack
Fanny became the first woman in the world to ever win the Olympic gold medal in swimming, representing Australasia. Before getting to the finals, where she won the first gold medal for women, she set a new world record of 1:19.8 doing the 100m freestyle.
2) Gertrude Ederle
3) Krisztina Egerszegi
Krisztina became the youngest-ever female Olympic champion in swimming at 14 years years old. She’s participated in three Olympic Games and is a five-time Olympic medalist. She held the world record in the long course 200 m backstroke for almost 17 years, was ranked the top swimmer in the 200 m backstroke in the world rankings in 1988, and won the same swimming event at three consecutive Summer Olympics!
4) Natalie Coughlin
Natalie Coughlin is a twelve-time Olympic medalist. At the 2008 Summer Olympics, she became the first U.S. female athlete in modern Olympic history to win six medals in one Olympiad, and the first woman ever to win a 100-meter backstroke gold in two consecutive Olympics (wikipedia).