Dude, swimming is surely a good sports. But are you getting fun with it? If so, it will certainly helps yu losing weight. In fact, any sports as long as you do it crazlier, you will lose your weight. That's what I do. As long as I got fun in a sports, I just do it and no doubt, I lose weight. By the way, the tools here are pretty good to monitor the weight! Good luck, pal
Craziersporter