Why ?

I remember last time like many years back, Australia has got a strong swimming team. I am not sure about now though. I cant remember if it was Olympics or Commonwealth Games. Maybe Commonwealth Games. So, I asked L. Why Australia's swimming team was strong?

My answer : Because Australia has got a warmer weather compared to European countries and so they swim more often.

L's answer : Because there are sharks everywhere surrounding Australia. So, the people there need to be a good swimmer.

Agree??