I have noticed in some of the videos of the Island Living pack that there are 2 different swimming strokes. one breast stroke (slower), and another is a Olympic style swim stroke (faster). did anyone ...
Yes it's related with your sims's fitness skill. I think when your sim get on level 3 or 5 of fitness skill, they'll change to crawl style. But, when they swim on shallow waters they will, most of the time, change to breastroke or in game called is called "wade".