[adrianratnapala]

While I agree it is better in the Australia, it can't be that uncommon. I am Australian but would struggle to swim 100m.

I have always been a pretty poor swimmer by local standards. But that is not because others did any more lessons in school than I did (those lessons were quite limited).

Some might have had more private lessons than me; but I think the main difference is that they bedded down what they had learned in lessons doing recreational swimming. Which I is common in Australia, but rare where my family comes from.