How do you reduce weight by swimming?

If you keep your pulse rate from 130-150 beats per minute, you are working at an aerobic level and are losing weight. Anything above that would be anaerobic and anything below would be ineffective. Swimming for more than a half hour at this heart rate will produce a steady weight loss, but not as immediate as running or more traditional workouts. Swimming will, however, strengthen more areas of your body than any other exercise.