 quite suddenly and if you're not prepared for that you can be in over your head before you know it and trying to swim against currents whether it's river currents or along the beaches if there's a rip current try and float on your back let the current take you and it's best you can swim sideways that's right that's a good one and eventually especially if you're in those currented waters eventually the current's going to get you closer to shore if you relax and go with the current eventually it's going to push you well you don't think so