Dr. Hal Henning, FINA's president from 1972 through 1976, and their first American President, was highly instrumental in starting the first World Aquatics Championships, and in retaining the number of swimming events in the Olympics, which gave an advantage to nations with larger, more balanced swim teams.

Additional standalone editions of the Open Water Championships were also held in the even years from 2000 to 2010.

Prior to this, the Masters Championship was held separately, biennially in even years.

Boldface denotes active athletes and highest medal count per type.

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