First of all, height is a huge advantage in swimming, and these countries generally have taller people. Also, swimming is more of a minority sport in other countries, but swimming is a growing sport in these two countries that have become a main part of these countries' summer Olympics.
Australia is the best America ; we got Michael phelps.
Swimming is Australia's best Olympic sport. Out of the 143 Gold medals that Australia has won in Olympics, as of 2014, swimming makes up 58 of them.
swimming
According to most websites, Australia and America are the best countries in swimming.
AFL
Swimming Australia was created in 1909.
All the best swimming holes in the US can be found at: www.swimmingholes.info Tom Hillegass
In the past the US, at present Australia.
swimming
Murray G. Phillips has written: 'Swimming Australia' -- subject(s): Swimming Australia, History, Swimmers, Swimming
America/Australia. Technically Australia is superior in terms of capable swimmers, mainly because nearly everyone lives on the coast and goes swimming in the warm pacific. The two countries normally come out equally at the Olympics, only Australia has 21 million people and America has 270 million.
Australia