My most memorable experience was when I was just out of high school and camping at the ocean. No facilities to speak of. Just go out to where the waves are breaking, take off the swim shorts, start doing the breast stroke and just let "things happen". It was a very odd feeling. Almost like a water birth from a mans point of view. Oddly natural, like you were a fish or dolphin. Try to swim fast and with the current heading towards you also.